Related
I'm not sure if this is something we can solve via software but I've noticed some oddities with the power draw of the display on the Nexus One.
In my(very unscientific) testing, I've found that the display of the Nexus One seems to draw about as much power when almost completely black(all black pixels except the notification bar) as it does when displaying the normal range of colors throughout. The way I found this is that after about 1/2 hour with the screen all black except the notification bar(listening to online radio via flash in the browser, zoomed in completely to the bottom which had all black pixels), in the battery usage info it showed 71% of the battery usage was from the display and my battery was a little less than 90%.
When doing the same without zooming into the bottom, so it fully shows the animations and normal color range on the display, I see about the same battery drain and about the same percentage used by the display.
Obviously, there could be some fluctuation here, but given how much drain is from the display(consistently about 70% of the total 10% battery drain), and how consistently I get these or similar results, I'm forced to infer that the display uses about the same amount of power, regardless of whether it's displaying only black or a full normal range of color.
Even accounting for the inconsistencies resulting from my admittedly poor testing methods, I should be seeing a massive difference in battery usage by the display between these two scenarios. So, what I'm wondering is if this could be a problem in the driver for the display, not using adequate power management, a problem with the screen hardware itself, or just a problem with the battery usage reporting in Android? Or the other possibility, that I'm misunderstanding how the tech works and there shouldn't be a significant difference in battery drain depending on how much of the display is being used.
Also, I'd like to see if other people are having similar findings.
Finally, a note: I'm reaching a bit outside of my expertise with this topic, so forgive me if my expectations are completely off base.
Dump the actual current draw of the phone, say, once a second (in ADB), round it a little bit - and you'll see the exact difference between all black display and colored display.
To show the value:
cat sys/class/power_supply/battery/current_now
You need to loop it and save the results (write a small script?).
The display draw indication is not something to base on, since it's too "virtual" and includes lots of things.
Jack_R1 said:
Dump the actual current draw of the phone, say, once a second (in ADB), round it a little bit - and you'll see the exact difference between all black display and colored display.
To show the value:
cat sys/class/power_supply/battery/current_now
You need to loop it and save the results (write a small script?).
The display draw indication is not something to base on, since it's too "virtual" and includes lots of things.
Click to expand...
Click to collapse
Hmm, that doesn't seem to update very often, I'm getting the exact same value for like a full minute regardless of what changes occur. At any rate, it's also giving really strange results, with a value fluctuating around 291000(no idea what units are being used) with the screen off entirely and around 157000 when displaying the homescreen(with a live wallpaper running). So, I have no idea what these values mean but I'll post my results anyway:
Full brightness:
displaying full screen black image: about 253000
displaying full screen white image: about -100000
So, obviously there's a huge difference here. Looking at them straight forwardly, it looks like a pitch black screen uses far more current, but then a white image has negative current and I have no idea what that would even mean. Do these values use some kind of inverted units?
You're getting positive current because it is charging (through USB). The negative value means it is drawing more power than the USB cable is supplying. With your values, the white image is drawing far more power than the black one.
persiansown said:
You're getting positive current because it is charging (through USB). The negative value means it is drawing more power than the USB cable is supplying. With your values, the white image is drawing far more power than the black one.
Click to expand...
Click to collapse
Ah, that makes sense(though it's surprising, that'd mean that if I leave it on a white screen and have it charging it'll discharge? I suppose that's probably happening because it's connected to a computer and not an outlet.
At any rate, the implication is that the battery usage stats are horribly inaccurate, since the percentage used by the screen should be MUCH higher when actually drawing things than when not. Time for another test, though, I think. I'll test to see how it performs when displaying just the notification bar, to see how the power draw scales with that.
...And it looks like I'm getting slightly higher usage than the all-black screen, exactly what you'd expect. So... what's going on with the battery usage percentage? It appears to not just be off by a small amount, but rather wildly inaccurate.
Is this turned into an app, id definiately buy it.
[email protected] said:
I'm not sure if this is something we can solve via software but I've noticed some oddities with the power draw of the display on the Nexus One.
In my(very unscientific) testing, I've found that the display of the Nexus One seems to draw about as much power when almost completely black(all black pixels except the notification bar) as it does when displaying the normal range of colors throughout.
Click to expand...
Click to collapse
Not quite the case. Android developer Jeff Sharkey just recently did some testing on the screen on the battery. For all the information, check out his blog post: Android SurfaceFlinger Tricks for Fun and Profit.
There was a definite difference between all black and full color.
There are indeed ways to address this with software (or at least some personal customizations), most all of which are either indicated or alluded to in the post.
[email protected] said:
(no idea what units are being used)
Click to expand...
Click to collapse
The units are in microAmpers (uA).
Positive current means charging, negative means discharging.
And yes, as noted correctly a couple of posts above, you're testing while connected to USB (slow) charger, and that's the reason for your readings.
Hello, guys. I know this post is awfully long, but please, bear with me
I am fairly new to Sammy, as I just got the S2 (I9100, not some other variant... it's the very original) three days ago. I rooted it, flashed CWM, and already tried a few ROMs. I'm sticking to MIUIv4 (WIUI, actually) for the moment, as I loved having MIUI on my previous devices.
There's just one thing that makes me wanna throw rocks at this phone... and that's not the Super AMOLED+ screen that has stains / ghosting effect... it's the CHARGER.
I believe the charger I'm using is original - it was in the package, so... it can't be a copy, lol. It says it can output 700mA at 5V, which is pretty standard... but it seems like it just doesn't do its job!!!
I've had three HTC devices before, and the HTC charger is just a brick that you plug into the socket, and then plug a USB cable in it (just like Motorola's and Apple's recently). It outputs 1A at 5V.
The Motorola ATRIX I previously owned had a charger that was outputting 850mA at 5.1V. Charging that 1900 mAh beast battery would take just a little over 3 hours!
I no longer own the ATRIX (sold it to get the S2, actually), but I did borrow a HTC charger (with a HTC USB cable) to see if I could charge my S2 faster. Nopes. The charger barely gave the S2 0.5 amps... which is normal, since I hear two pins must be connected in order for the Samsung phone to draw maximum power.
My Galaxy S2 is charging painfully slow with this original charger. I installed Battery Monitor Widget and let it log the battery charging overnight - the log file is attached below this post.
At the very first line of that text file, you can see the charging began. I let the phone turned on, with the screen off, to charge overnight. Wi-Fi, Mobile Data, BT, GPS, Auto-sync was off. It was just in auto 2G/3G mode. That hardly matters!
It looks like the phone is drawing 641mA constantly. It doesn't top 700mA, but that's okay - neither did the HTC phones reach more than 900mA, when the charger was able of 1A output.
It took the SGS2 exactly two hours and 50 minutes to fully charge. Given the fact that the charger outputs 700mA, and the battery is 1650mA, I'd say that's right. A 1900mAh battery was completely charged in 3 hours and something, with a 850mA output charger.
Still, that's painfully slow. I had the HTC EVO 3D, which has a 1730mAh battery. Charging that (@1A) would take little over two and a half hours. I could even browse the web via Wi-Fi or do something else on the phone and the battery would still be completely charged in less than three hours (unless I play a game on 3G with max brightness on, of course).
Also, when the battery was at 1% at lunchtime, I plugged in the charger. I continued to send text messages and browse the web via Wi-Fi (screen brightness was on minimum). The battery level did not rise from 1% even after 5 minutes! You can see that in the battery log. Yes, the phone's battery was almost dead in less than three hours.
Oh, also, the first day I got the phone, after I finished rooting and flashing MIUI and everything... I was playing Dark Legends, over Wi-Fi (screen was at lowest, again). Battery got down to 6%, I plug it into the charger. Ten minutes later, battery was down to 2% ! ! ! So, the charger cannot keep up !
I did my homeworks and did a "bit" of Google searching... it turns out the charger is just as it is. But this is just ridiculous.
-----
I remember seeing something on Twitter several months ago... an article regarding an app that would let you adjust how much power the Galaxy S2 can draw from the charger it's connected to, simply by dragging around a slider. I'm not wrong, I DID see such an article - I just can't find it anymore!
Anyone... any suggestions, please?
Also, please note that I am in Europe, Romania, so I can't just go to a shop and find the most awesome charger that outputs 2A for $5 like you guys can (there, in the US)... It's not really at hand for me, lol.
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
VAXXi said:
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Click to expand...
Click to collapse
Playing Dark Legends, via 3G this time (so the power consumption would be higher, right?), screen at FULL BRIGHTNESS, Bluetooth and GPS activated. Battery Monitor Widget tells me the current being drawn is 641mA. Looks like the phone draws 641mA when charging, ~80% of the time.
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
With HTC / Motorola, the power draw was maximum when the battery was at its (almost) lowest level, and would decrease as the battery was filling. With the SGS2, it looks like it draws 640mA from 0% to 70%, THEN it begins to slow down.
VAXXi said:
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
Click to expand...
Click to collapse
Oh, but trust me, I have. You know, in our country, even cheap Chinese copies are over-rated. It's hard to find stuff like what they have in the US .
I've seen some sort of a digital charger, so-to-say, which would allow you to set the amperage and voltage that was being outputted. It was able of throwing out anything from .5 to 2 amps, at 3.7 - 5.5V (given your choice). Guess what : friend got it from the States...
You don't see such stuff here, in Romania.
Oh well...
Sideromelane said:
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
Click to expand...
Click to collapse
On the HTC EVO 3D and Motorola ATRIX, it was yet to be proven whether undervolting the CPU would increase battery life or not. Undervolting as much as 200mV only reduced the ammount of heat that was generated (especially during gaming sessions). Although current = heat... the power consumption didn't seem to change a bit!
I even tried to downclock the CPU to 400 MHz - power draw would still not be sufficient in order for the phone to charge (when the battery level was under 10%). Everything was turned off, light on lowest, CPU pretty low... still going down, lol.
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
shadyr25 said:
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Formhault said:
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Click to expand...
Click to collapse
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Formhault said:
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
Click to expand...
Click to collapse
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Formhault said:
You don't see such stuff here, in Romania.
Click to expand...
Click to collapse
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
VAXXi said:
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Click to expand...
Click to collapse
Yeah, I know that. That's exactly what I'm saying. The algorithm is different on the S2, it seems.
On all HTC devices I had, the current draw was at its highest (~900mA) when the battery was near depletion, and as the battery was filling up, the current draw was slowly decreasing. On the S2, it looks like it's the other way around. When the battery is nearly empty (1%), barely 100mA are being drawn. As it fills up, near 10% or so, the current draw remains steady at ~641mA, and decreases only past the 70% point.
Good thing is, the current draw remains steady at 641mA, no matter how much I stress the phone! That's astonishing - the other day, the battery was LEAKING 600mA instead of GETTING 641mA when the simplest tasks were done (no stress, that is), during charging...
Guess the guy who had this phone before me didn't really ever charge up the battery properly He said he had an iPhone charger back at home; I told him "nevermind, keep it".
shadyr25 said:
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
The benchmarks are simply amazing; even with the CPU downclocked to 800 MHz...
I'll look for that kernel, hope it's MIUIv4-compatible. Thank you!
VAXXi said:
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
Click to expand...
Click to collapse
Everyone's talking about a specific shop down that street... and I never got to actually go there. Guess I gotta look for it... Was kind of doubting it was much of a big deal.
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I thought posts made within a specific time range were supposed to merge... That obviously didn't happen. Sorry for the multi post
As the title says...what's the strongest charger? I've noticed my current one when using the GPS with navigation even with it plugged in it'll still lose battery life. Current model I have does 750mA. Are there better ones out there?
Nosferatu. said:
As the title says...what's the strongest charger? I've noticed my current one when using the GPS with navigation even with it plugged in it'll still lose battery life. Current model I have does 750mA. Are there better ones out there?
Click to expand...
Click to collapse
There are ones made for tablets that outputs 2.1A. Not sure how much our phones can actually draw from it though.
EDIT// Per Entropy
Entropy512 said:
Basically, anything with a rating of 0.7 amps or above which shorts D+ and D- together (indicating a dumb charger) will behave the same.
Our internal charging chip limits to 650 mA on AC and 400 on USB. So the only thing you have to watch out for with cheap chargers are:
1) Voltage WAY off from 5 volts (USB standard) at 650 mA load
2) Does not properly signal "dumb charger" causing the phone to charge at 400 mA
Click to expand...
Click to collapse
gsrrr said:
There are ones made for tablets that outputs 2.1A. Not sure how much our phones can actually draw from it though.
Click to expand...
Click to collapse
right my problem is finding one that not only draws 1000mA and uses it. I have one that when I plug it in it'll say AC charging and on the unit it says 1000mA but it obviously isn't doing it's job if I'm losing battery life while running GPS navigation in the car. Short of me buying a bulking inverter for the car so I can plug a wall outlet plug directly into it I'd prefer to find a USB to 12V that works right.
I briefly thumbed this thread to get a bit more educated but still no luck on finding a product that works...
http://forum.xda-developers.com/showthread.php?t=767961
his edit says 650 on wall outlet 400 on USB no matter how big a unit you buy you'll always get 650 Max. Lower brightness and only have the GPS going
Sent from my SGH-I777 using xda premium
I have the AT$T-branded car charger and when I was using the phone for nav I had no issues with over drain unless I also was streaming Slacker or Pandora at the same time. I now have a truck with built-in nav, so I no longer use the phone for that.
my concern is because I just got a Passport 9500ix and I'm using the live cord so it requires the screen to be on, bluetooth on (which is on anyways for my handsfree), and a GPS signal to be on.
I normally don't use GPS either in the car as I have a built in nav for my vehicle.
I use mine with BT in the car and streaming Slacker with the screen on constant and I never turn off GPS. Have yet to have a charging deficit issue with the aforementioned charger.
well the LiveCable had a USB port on it, plugged it in, and says Charging (AC).
Let's see how this thing holds up I'll re-post in this thread if there's a problem. I'll try it's port instead of my current socket which is not sufficient.
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
I still have a motorola rapid charger from a while back. You guys know much more than i do im sure, especially with the mA pull but ive never had drain while running GPS with brightness on high on my motorcycle.
Rrryan2 said:
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
interesting about setting CPU down when running navigation! I'll have to try that.
Well the good news is with a combination of the stock USB cable plugged into the Live cord for the radar I'm actually charging now while using navigation (slowly but it's charging). Full brightness though it'll either hold steady or drop maybe 1% in 45min or so. Anything but high brightness and it'll charge.
Rrryan2 said:
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
Samsung car dock just uses whatever its input is. The phone treats it the same as an AC power supply - 650 mA limit regardless of what the power supply capability is.
Interesting note: The power supply's method for signaling a "dumb charger" becomes irrelevant on official docks. All the phone knows is it's docked and it has power, it assumes an AC charger. As a result, power supplies that are intended for iDevices will get detected as USB (400 mA limit on I777) if connected directly, but AC if connected via dock.
Nosferatu. said:
interesting about setting CPU down when running navigation! I'll have to try that.
Click to expand...
Click to collapse
Recent versions of SetCPU make it really easy to set a profile that triggers automatically when the nav app is started. Well worth the $1.99 price of the app.
Nosferatu. said:
Well the good news is with a combination of the stock USB cable plugged into the Live cord for the radar I'm actually charging now while using navigation (slowly but it's charging). Full brightness though it'll either hold steady or drop maybe 1% in 45min or so. Anything but high brightness and it'll charge.
Click to expand...
Click to collapse
Hmm... I confess I haven't paid close attention to it lately, but if I remember right if auto-brightness is selected the screen automatically dims between turns but then ratchets up brightness when a turn is approaching. Maybe setting auto-brightness might handle the issue for you...?
Rrryan2 said:
Recent versions of SetCPU make it really easy to set a profile that triggers automatically when the nav app is started. Well worth the $1.99 price of the app.
Hmm... I confess I haven't paid close attention to it lately, but if I remember right if auto-brightness is selected the screen automatically dims between turns but then ratchets up brightness when a turn is approaching. Maybe setting auto-brightness might handle the issue for you...?
Click to expand...
Click to collapse
-as for SetCPU I'm running that setting now. Once or twice SetCPU has been granted superuser came up while running (fine with me it's doing it's job)
-as for auto brightness I'll try with it later. The software Escort uses is a proprietary program and not directly google's maps program (although it does use it's maps).
https://play.google.com/store/apps/details?id=com.escort.androidui.root&hl=en
you could always flash siyha kernel. it has a setting in ex tweaks to set charging currents. you can up it for all of the devices so usb smart and dumb chargers all charge at 650mA though that might damage a pc usb port... just be careful. and the hardware limits it to 650mA, no more, a lot less
tmckenn2 said:
you could always flash siyha kernel. it has a setting in ex tweaks to set charging currents. you can up it for all of the devices so usb smart and dumb chargers all charge at 650mA though that might damage a pc usb port... just be careful. and the hardware limits it to 650mA, no more, a lot less
Click to expand...
Click to collapse
I do have Siyah kernel any link to a thread about this or a quick how to? I'm sure if I played with it enough I'd figure it out but since you're familiar with the subject I figured you'd hook me up! I tend not to play with these types of tweaks too much on my phone... :good:
I have the OEM Samsung car charger. Thankfully, I can have GPS on while plugged in and the phone still charges up, albeit slowly, but it certainly doesn't drain.
Here's the car charger I have:
http://item.mobileweb.ebay.com/viewitem?itemId=400310588012&index=14&nav=SEARCH&nid=89155668283
Sent from my Samsung Galaxy S II
Early adapter, shifted from samsung and Miui is dumpster fire.
Annoying bugs:
1) Aux/Handsfree doesn't provides full volume untill you lock and unlock your phone, music stops, you play again, music gets higher volume
*UPDATE: Turning screen on and off doesn't work. It now works when you do or receive a voice call over network while plugging in the headphone jack.*
2) It just keeps killing apps. Turned off battery saver, Manually set up every app not to be optimized. Turned off miui optimization (tried turning it on) no luck.
*Update: it still is aggressive but updates have made it a little better, still sucks tho*
3) Chrome and other browser simply do not care, they just kill your page. Go to another link for one sec, come back, page reloads.
*Update: Somewhat better*
4) when you search something in any browser, and tried editing it on the second attempt, cursor simply doesn't show
*Update: Solved*
5) Whatsapp notifications show previous messages instead of current message received, have to open notifications center to see who texted
6) Can't change keyboard layout and size, tried third party, it simply doesn't work
7) Navigation gestures are a disaster, phone lags horribly, stutters in every app, pip goes wild, apps overlap, hot mess. E.g maps just doesn't do pip with gestures
8) well, pip is very buggy, glitches 4 out of 10 times, any app. Dual screen mode buggy, apps weird out when try to resize them, even supported apps
*Update: Floating windows works fine. Pip is better, not flawless but much much better*
9) You can't change navigation button style unless changing whole phones theme from the app. Try 3rd party, it just overlaps over current one
10) biggest annoyance, No second space. I used secure folder a lot, it just doesn't have one, tried everything, googling, no answers.
*Update: Its hidden, it's definitely triggerable by activity launcher but xiaomi has hidden it from the settings which is stupidly weird?*
11) Doesn't hides punch hole in landscape, tried everything, 3rd party apps, magisk, it simply doesn't care
12) Having no sensor for turning off screen while on call, it shows, IT REALLY SHOWS. When you're on a call, a simple hand gesture would turn off your screen and it would not turn it on untill you swing your phone
13) Auto brightness is a joke, its hit and miss. 7/10 times have to adjust myself
14) Phone vibrates on full volume, plastic body shows but sound is more than decent, no distortions
14) Doesn't charges the phone while gaming, but lags the games like crazy you simply can't charge and play with the original charger, 10w charger works fine. No option to disable fast charging
15) Baked ads in every system app, Replace every system app, i repeat replace every system. E.g music, file manager, gallery
16) Disable scanning while installing apps, it sometimes unlocks the phone by itself and display over anything you're doing
(Edit 1)
17) Phones doesn't triggers screen to turn on when someone calls, when battery saver is turned on. You have to unlock the phone, open notifications and than click on the call notification and than pick up.
*************************************
Apart from these bugs, phone works great for its price. Kindly mention if anything can be done for these. Will keep updating with solutions and more bugs (hope not)
For 15) you can disable ads, although you have to do it for each app separately (the setting is usually called "recommendations")
bomberb17 said:
For 15) you can disable ads, although you have to do it for each app separately (the setting is usually called "recommendations")
Click to expand...
Click to collapse
Did that but it resets everytime my phone updates. I just replaced it, changed default apps by default app
10) Second space option available from Activity Launcher app.
You -shouldn't- charge while using. Most smartphone power controllers behave like that by design.
Think of it as character rather than bugs
blackhawk said:
You -shouldn't- charge while using. Most smartphone power controllers behave like that by design.
Think of it as character rather than bugs
Click to expand...
Click to collapse
Well why shouldn't you? Everyone s usage differs, my works like that. Used samsung devices for years, never had the issue to charge and use? It actually charged at the same rate on heavy use as it charges while not using the phone.
This phone? Oh my, it goes crazy slow and doesn't charge at all on 33w but does fine on 10w charger
OrianPledge said:
Well why shouldn't you? Everyone s usage differs, my works like that. Used samsung devices for years, never had the issue to charge and use? It actually charged at the same rate on heavy use as it charges while not using the phone.
This phone? Oh my, it goes crazy slow and doesn't charge at all on 33w but does fine on 10w charger
Click to expand...
Click to collapse
It skews the charge curve. It will charge little and drives up the battery temp needlessly.
10 watts is nothing... it supports fast charging, right? Use the right brick and cable.
A damaged Li will fast charge erratically or not at all.
vvvvzz said:
10) Second space option available from Activity Launcher app.
Click to expand...
Click to collapse
Thank you!!! Works but switch button keeps disappearing from the home page, have to find a work around.
Curious, why they haven't included it in the system settings?
blackhawk said:
It skews the charge curve. It will charge little and drives up the battery temp needlessly.
10 watts is nothing... it supports fast charging, right? Use the right brick and cable.
A damaged Li will fast charge erratically or not at all.
Click to expand...
Click to collapse
Thank you, I'll try to use the original brick but 10w is a life saver when I need to use my phone at the same time. I'm not planning to prolong the phones life anyway.
It's not much of a difference if we really look into it, 0-50 33w is faster but after 50%, both bricks perform marginally same
OrianPledge said:
Thank you, I'll try to use the original brick but 10w is a life saver when I need to use my phone at the same time. I'm not planning to prolong the phones life anyway.
It's not much of a difference if we really look into it, 0-50 33w is faster but after 50%, both bricks perform marginally same
Click to expand...
Click to collapse
I've noticed the battery performance/life drops faster when using the device like that so I avoid it.
Odd that faster charging disengages at 50%.
Keep an eye open for signs of battery swelling, replace it asap if you spot that. You don't need an event to occur.
blackhawk said:
I've noticed the battery performance/life drops faster when using the device like that so I avoid it.
Odd that faster charging disengages at 50%.
Keep an eye open for signs of battery swelling, replace it asap if you spot that. You don't need an event to occur.
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Click to collapse
Its a brand new phone, I really doubt that the battery is swole. I never really experienced battery losing life on newer phones which is drastically noticeable, over time, battery loses health anyways, whats more 5%.
OrianPledge said:
Its a brand new phone, I really doubt that the battery is swole. I never really experienced battery losing life on newer phones which is drastically noticeable, over time, battery loses health anyways, whats more 5%.
Click to expand...
Click to collapse
Li batteries can fail at any time. It's rare for events to happen but lower level failures are common.
I just replaced one that failed on my Note 10+, fortunately its swelling didn't damage the display.
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
EDIT: You need to be rooted to do this, and you need to reapply the settings after reboot.
I have a Tasker action that does this automatically 5 minutes after rebooting.
If only there was a way to use that without root :-S
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
I use the adaptive charging overnight and think that will help with battery life.
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
Click to expand...
Click to collapse
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
Galaxea said:
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
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Click to collapse
If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
vandyman said:
If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
Click to expand...
Click to collapse
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
Click to expand...
Click to collapse
Most folk don't notice reduction in battery capacity until it becomes severe. For example, a friend claimed it wasn't a problem charging his iPhone to 100% ritually. When he checked the OS, it said his battery capacity was 80% of what it was when new. He said he hadn't noticed it affect how long the phone lasted.
If your usage is such that you can predict how much capacity you need, you can choose to charge to 100% only those times you will actually need that capacity. Other times you can look after the battery so it's able to actually give near on 100% for longer, those times it's important to you.
Others who keep their phones a short time or are comfortable with the cost & inconvenience of a battery replacement, or simply don't care, don't have to worry....
WibblyW said:
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
Click to expand...
Click to collapse
This all maybe good if you are planning on keeping your device for a few years.
Most people buy a new device every other year. If not once a year.
... and if you really want to knacker the battery, heat it up too!
Worst case scenario - using a sat nav app on your phone in the car on a hot day with the phone plugged into a car adaptor. It's going to be sitting there at elevated temperatures, possibly with the sun shining on it, whilst being kept at 100% battery....
I'm only a customer (and have no other affiliation) and like to tinker, so I got one of these for use in the car to limit temperature when charging and limit max charge. Not cheap, but ok compared with the cost of the phone https://chargie.org/
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run. I had a Xiaomi Mi10 Ultra with 120W fast charger. That phone used to charge from 0% to full in like 20 minutes. Now that's one way to quickly kill your battery.
The Pixel uses your alarm to adaptively charge the battery so it should never overcharge it anyway. I'd much rather us all of my battery than use it only between 20 and 80% just for it to last a little longer.
The files are overwritten on reboot so I created a Tasker task to write the values on reboot each time.
Biggenz said:
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run.
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Click to collapse
On what basis? All the research and tests are based on charge level not charge rate. Fast charging potentially just makes it worse...
But at the end of the day it's your phone. You'll charge it in whatever way works for you.
I feel like this post sort of misses the point. It clearly is aimed at those intending to keep their phones >1yr, it is stated explicitly.
I'm not rooted right now, so I've been using the AccuBattery app. One of the things it does it gives a notification every few minutes when the battery is at 80% or above so that you can physically unplug the phone from the charger. Obviously having this done automatically would be better, but I've been surprised at how well the notifications have worked in my case. Plus, I can always leave the phone plugged in if I know I need a full battery for some reason (ie a long day away from any charging source).
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Gibsonflyingv said:
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Click to expand...
Click to collapse
I used FX File Explorer (root option). Look for the #. SYSTEM (Root).
I was wondering if changing the file permissions after writing to them to read-only would make the changes stick, but I am sure the OS could still overwrite them...??
I wonder if there's a similar variable to tweak at what temperature the phone considers the battery is too hot and stops charging?
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Did a bit of testing and it works fine. A few things I noticed:
1. Doesn't survive reboot. Now that I've set up MiX with pinned folders, I can make the change in seconds. Need to sit down and read through the acc documentation because AccA doesn't work. Would love to have an automatic solution. Miss my old Battery Charge Limit.
2. charge_start doesn't seem to matter. After all, if charge_start is set to 75 and the phone is at 70%, it shouldn't charge. But it does. I've kept mine at 0.
3. Point #2 is kinda beside the point, though, because charge_stop will stop at the set value and stay there. No noticeable increase in temperature from what I can see. Definitely less than when charging.
4. Still shows as charging rapidly when it hits the level. Is it rapidly cycling charging on and off? Or in a kind of micro-current state? Or this may be a true battery idle situation where all power is drawn from the adapter. Ampere and AccA just show "not charging".
Edit: With a bit of use today, it does seem to act like a normal min/max charge deal, so I set it at 75 start/76 stop. Not sure what was happening at first...maybe something to do with the adaptive charging since I still have that on. Either, way, no complaints. With my use case working from home, I have it plugged in most of the day and it'll only take me about a minute to change charge_stop to 100 when I'm planning to go out all day somewhere away from chargers. Not ideal, but still a big improvement. Changes my rating of the thing from maybe 3.5 stars to 4.5.