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Hello All,
I was a happy user of Galaxy S GT-i9000 for about an year, when I thought of upgrading to its newer brother, the Galaxy S II. After a little bit of research, I found several people complaining about Wifi signal strength & overheating issues. I thought of starting a poll to discover if the above-mentioned issues were for real.
Please respond and use the polling option to provide your feedback.
cheers,
rishi2504
May I request the moderators to turn this poll into a sticky, so that the thread doesn't get lost b/w other posts.
cheers,
rishi2504
Wifi strength is not noticeably a problem for me. My phone tends to overheat only when playing games while charging. But I have no complaints about that.
What I get pissed off most about is its battery life. Horrible, IMHO. I have no idea how some people can get up to 2 days worth of usage on a full charge while I get only half a day(12 hours thereabout) on average usage - I.e. casual gaming, some surfing with 3g, nothing more.
Sent from my GT-I9100 using XDA App
I am a newbie to the smartphone world, and the SGS2 is my first smart phone, but, I've had no problems with the wifi in my limited experience and no overheating issues.
You can take my answer with a grain of salt if you wish since I don't have anything else to really compare it too.
Please use the Q&A Forum for questions Thanks
Moving to Q&A
I don't call it's signal a problem, my Nokia 5800 was even worse, for me it was an upgrade.
As for overheating, the camera metal frame was getting hot when playing Dungeon Defense, but only in the first week, can't explain why it stopped (no fw update)
Since we have Q&A stickies in the Inspire and Captivate forums (as well as a few other fora around here), I thought we need a general CM7 Q&A here for the Atrix.
BEFORE ASKING QUESTIONS IN THE FORUMS, ASK YOURSELF:
Has this question probably come up so often that there is an FAQ that includes it?
OFFICIAL CM7 FAQ FROM THE ATRIX-DEV TEAM
Phalanx7621 said:
I know how much people LOVE to post questions in here as if it's the CM7 ROM and get all pissy about how things dont' work, but keep in mind that if that were true and a bunch of stuff didn't work it would NOT have been made part of the nightly CM7 releases. Also, it wouldn't have been released if that were the case. The devs work very hard to make sure most major problems are taken care of before every release, but if yer flashing A NIGHTLY, keep in mind it comes with NO promises of functionality and it is STATED in the OP that it shouldn't be used as a daily driver. So if you have a stable version, such as the lastest stable version found on the development page OP, then post a question or comment here after searching for the answer with search feature here and google. Otherwise, there's a Nightly post section as well in the Development side if you wanna look there and that's what yer using. Most of the time if there is a major issue and you can't find it on the bug tracker than it's yer phone, or something you have installed that is messing with the functionality of the ROM. Lastly remember folks, it's the developers job to make their product work with the ROM, not the other way around. Have fun, happy flashing!
Click to expand...
Click to collapse
You know what ? Its a damned good idea. Too many people are cluttering the development thread. Now since no one else has posted a question related to CM7, I have one:
Can someone help me figure out what is eating my battery on standby ?? I don't have that power hungry facebook app and I did some tweaks found ( via SetCPU ) that I found in the development thread, but it made very little difference. The thing is, I just have no idea how to monitor what is using all the power. How did they figure out that facebook was causing a big drain ?
Do you use google latitude?
A very good thing is use BetterBatteryStats to really understand where the CPU is being keept awake. The embed battery stats for example only showed me Android OS as a culprit, but gave me no further details..
my 2 cents
i have heard CPU Spy is great for figuring out whats using up your resources. dont know as i tend to get pretty good battery life (16+ hours with exchange push enabled)
Thanks for the tips. Yes, I do/have used latitude. I'll put an end to that and give those apps a try. Will report back!
Any idea tips & tricks for CyanogenMod Setting?
raunamaxtor said:
Any idea tips & tricks for CyanogenMod Setting?
Click to expand...
Click to collapse
this isnt all inclusive, but it might give you a start
http://wiki.cyanogenmod.com/wiki/CyanogenMod_Settings
Had anyone else had trouble getting the hbogo app to work on CM7? I can login and try to play a video but get audio with no video. The hbogo splash screen plays perfectly when playing a video for the first time.
Edit: Just found a bug report for this exact issue. (issue 163, sorry, I can't post links.)
Sent from my MB860 using XDA App
When I receive a call, my phone goes to a lock screen, I have to swipe the lock screen to answer. On stock, when I got a call, the screen woke up in the dialer app and all I had to do was press the answer button. For the life of me I can't seem to find a setting to change this, any input appreciated.
mobileweasel said:
You know what ? Its a damned good idea. Too many people are cluttering the development thread. Now since no one else has posted a question related to CM7, I have one:
Can someone help me figure out what is eating my battery on standby ?? I don't have that power hungry facebook app and I did some tweaks found ( via SetCPU ) that I found in the development thread, but it made very little difference. The thing is, I just have no idea how to monitor what is using all the power. How did they figure out that facebook was causing a big drain ?
Click to expand...
Click to collapse
Do you by chance have Tango installed? I had it for all of 2 days and noticed my battery died about twice as fast as it normally would. I usually get a good 16+ hours easy with moderate use but was only getting about 9 with the same usage. Did a quick google search and verified tango was the culprit. Uninstalled and back to normal. I don't know if this applies to any other video call apps but might be worth looking into.
emmc
Think I already read something about it, but cannot find right now... What's the deal with /mnt/emmc and /sdcard in cm7 ? Is it possible to get it back like the stock rom ?
I am having problems using Titanium and taking screenshots, think it is something related...
Thanks in advance!
Wifi connectivity drives me nuts on cm7. Had to turn it off and on in order to connect. Someone mentioned to edit propbuild. Idk what that means.
Sent from my MB860 using XDA App
eklam said:
Think I already read something about it, but cannot find right now... What's the deal with /mnt/emmc and /sdcard in cm7 ? Is it possible to get it back like the stock rom ?
I am having problems using Titanium and taking screenshots, think it is something related...
Thanks in advance!
Click to expand...
Click to collapse
You need to go into Setting/CyanogenMod settings/Application, check "Use internal storage" then reboot your phone and it should be back to how it was before.
Betterbatterystats seems to have found some interesting things. Phone on for 1hr and ten minutes.
Under partial wakelocks:
Lightflow: 1hr10m3s
AlarmManager: 58m13s
JuiceDefender:55m44s
There is more ( I can provide screenshot if required ), but those are the top three.
I do find this a little odd. Juice defender was just installed the other day and I can't see how it would cause any problems. Battery was a bit crappy before and didn't get any better/worse. I froze lightflow the other day and battery drain was about the same.
filthyfnj24: Nope no Tango.
I can provide a list of apps if would help as well.
I got watchdog and Im able to detect what cause battery drain while on standby. Its the "suspend" service running on the background with 90% cpu usage ... as soon as I heard the warning from watchdog, I wake my phone and that "suspend" stop immidately. Happen to me since I got this rom cm7. It didn't happen before on alien...
Sent from my MB860 using XDA App
I as well am having problems with Suspend and abnormally high sensor usage.
I got watchdog and Im able to detect what cause battery drain while on standby. Its the "suspend" service running on the background with 90% cpu usage ... as soon as I heard the warning from watchdog, I wake my phone and that "suspend" stop immidately. Happen to me since I got this rom cm7. It didn't happen before on alien...
Click to expand...
Click to collapse
EDIT: upon further investigation I have narrowed down AlarmManager as causing a lot of partial wake locks, but I dont have any alarms set and have not synced my calendar and have the Calendar alerts turned off. However Suspend is showing as a problem as well.
I'm using BetterBatteryStats, SpareParts, and the stock battery manager to try and track this down.
Well, after eliminating Lightflow and turning off Beautiful Widgets small weather, things are improving. Instead of losing 5% per hour on standby, it is now down to about 3%. Juice defender and Alarm manager are still at the top of the list, In 2hrs and 18min I have:
Alarm manager 33m12s
Juice defender 27m56s
So, Juice Defender is next on the list. The funny part is I know that CM7 is causing this. Battery used to last near forever on standby.
Great idea... Stickied. You may also want to check out the atrix-dev-team FAQ and consider suggesting Q/A posts from this thread or links to other posts in other threads, for updates to that FAQ.
Ever since I upgraded from pre-beta 4 to Beta, my phone has had two horizontal deadzone lines on the touchscreen. This persists from ROM to ROM, and is getting to be annoying. I have no warranty, as I bought the phone from a guy who won it in a contest, unlocked it and brought it to another carrier.
Is there any chance that this is a software issue, and can be repaired?
I got it !!!!
Alarm Manager is no longer a problem. Phone now sleeping correctly. I disabled background date, topped off the battery and verified via Betterbatterystats. Now if we could disable background data while it sleeps and re-enable it when you wake it up then we'd be set.
Hi,
I followed qbking77's video to install the alpha build of ICS on photon 4G. I then used Antutu CPU Master (Free) to underclock the phone. After the twaeking I used the app CPU Spy to check the distribution of CPU frequencies used over a period of time. I observed that the phone has not been able to get into the deep sleep mode. With stock ROM, the phone always spent over 80% of the time in deep sleep (averaged over a day). But the ICS build is not allowing the phone to get into deep sleep state.
Its either this or the CPU Spy app is broken by the ICS build. I am not sure what it is and I wanted to ask the forum members if they have seen anything similar. Due to permission issues I am being forced to post it here rather than the development thread. I apologize if this causes any confusion.
I am interested in this as this might help improve the battery life.
- Harakiri
Harakiri1298 said:
Hi,
I followed qbking77's video to install the alpha build of ICS on photon 4G. I then used Antutu CPU Master (Free) to underclock the phone. After the twaeking I used the app CPU Spy to check the distribution of CPU frequencies used over a period of time. I observed that the phone has not been able to get into the deep sleep mode. With stock ROM, the phone always spent over 80% of the time in deep sleep (averaged over a day). But the ICS build is not allowing the phone to get into deep sleep state.
Its either this or the CPU Spy app is broken by the ICS build. I am not sure what it is and I wanted to ask the forum members if they have seen anything similar. Due to permission issues I am being forced to post it here rather than the development thread. I apologize if this causes any confusion.
I am interested in this as this might help improve the battery life.
- Harakiri
Click to expand...
Click to collapse
Have you posted any of this info in Joker's ICS Forum? I think he would appreciate the feedback.
I cant post in dev forum unless I have 10 posts. If someone could post in on my behalf it would be great. I think this is something that will greatly improve battery life if it gets fixed.
- Harakiri
Hi there,
probably that request would make more sense in the developer forum but i didnt post enough yet
Actually i get insane battery batterylife with the bali 1.8.8 UV version, therefore i tried the non UV version with even more lowerd voltages via set cpu. it was stable but drained a lot faster. don´t know why.
so my request would be "pre-undervolted" bali kernels that might have even longer batteryliftime. Any hints on that? Someone who is able to compile something like this?
Best regards,
vibrantoparanto (from germany)
Hint' Bali X+Voltage control app= win !!!
Sent from my SGH-T959 using xda premium
^^ that is your answer....currently what im using
bali-x is what i used before - i lowered the voltages up to -150mv with some frequencies but it still gave me only about half the battery lifetime (less than 24 hours with moderate use) then i get with bali uv. What did you use to manually undervolt and how is your battery lifetime?
vibrantoparanto said:
bali-x is what i used before - i lowered the voltages up to -150mv with some frequencies but it still gave me only about half the battery lifetime (less than 24 hours with moderate use) then i get with bali uv. What did you use to manually undervolt and how is your battery lifetime?
Click to expand...
Click to collapse
i hate to burst your bubble, but youre chasing a ghost. uv'ing will not produce very noticeable changes to your battery life, especially if were are talking baout different versions of the same kernel.
take a look at this: http://forum.xda-developers.com/showpost.php?p=21024393&postcount=8
Cannot agree with that. I tried *a lot* and flashed different roms and kernels for years now. With stock kernels i get up to two days standby with low/moderate use, with bali UV i get almost three days. I have no idead why, but at least the standby time differs dramatically between kernels. At least thats for sure - under load that might be another thing. But probably you´re right and its just a "good standby behaviour" which would hardly benefit from lowered voltages. Would be still interesting to try a hardcore UV kernel
TopShelf, it is funny that you posted that note/post b/c I was just getting ready to PM you that I put part of it in my guide like I mentioned a week or so ago and the apps too.
Take a look at the Guide and maybe you will find some answers to your questions.
If you want to UV to the max, then you will have to test that yourself b/c every Vibrant reacts differently to OC/UV. Step it down -25v each day (don't set on boot until you know they work) and see where it freezes. There are OC/UV examples in the guide but beware, they are both for MIUI kernels.
Is there probably any admin out there who understands what i talk about and can move that thread to the developer forum?
this thread belongs here, you posted in the right section. posting in development will not get you answers from developers, it will only get you yelled at by hall monitors.
it is a common misconception that "developers" ONLY visit the "development" section. this is far from the truth.
sorry to say, the reason you have not gotten answers isnt because you posted in the wrong section, but because requests like these are pretty much never honored. the reason is because if a developer decides to make a slight alteration to a ROM/kernel for a member, he will then get BOMBARDED by dozens of other members who have tiny little tweaks that they would like in their ROM/kernel
Still trying to bring back some life to my request with this argument: I just checked my girlfriends device (using zendroid 2.1.2 with bali 1.8.8uv) and couldnt believe it: 3 days and 14 hours since unplugged with 8% left. The battery is a stock 1500mHa. And as its my girlfriends phone its definity not "overtweaked and calibrated". Personally i care much more about standby time than super heavy usage (guess that should be fine then too).
vibrantoparanto said:
Still trying to bring back some life to my request with this argument: I just checked my girlfriends device (using zendroid 2.1.2 with bali 1.8.8uv) and couldnt believe it: 3 days and 14 hours since unplugged with 8% left. The battery is a stock 1500mHa. And as its my girlfriends phone its definity not "overtweaked and calibrated". Personally i care much more about standby time than super heavy usage (guess that should be fine then too).
Click to expand...
Click to collapse
Since you didn't like the answer you got, for clarification purposes you are basically asking for a dev to use their time for FREE an modified/debug/test a kernel with your requirements just for your own sake ?
i wanted to point out that this is a very interesting kernel with great battery lifetime. if you have a look at all the other threads of people desperatly trying to get 24h of battery then you probably wouldnt consider this request as "wasting free time of others for my own sake".
vibrantoparanto said:
i wanted to point out that this is a very interesting kernel with great battery lifetime. if you have a look at all the other threads of people desperatly trying to get 24h of battery then you probably wouldnt consider this request as "wasting free time of others for my own sake".
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Click to collapse
i can prove to you that UVing does not make that much of a difference. if youre willing to learn, try this little experiment:
-UV your phone using your current settings
-put your phone in airplane mode
-turn it off
-charge it to 100% while its off
-after it boots up, leave it in airplane mode and immediately lock the screen
-let your phone sit idle in airplane mode from full charge to death (record the time)
--------------
Once youve done this, repeat all of the above steps but with STOCK VOLTAGE. record the time.
now compare the two times. i would be willing to bet a large sum of money that it is not a notable difference, if any.
my point is instead of trying to convince yourself that your theory of UVing is correct, why not do a TRUE battery life test, and simply find out for yourself. you cannot run true battery tests while you are actually using your phone becuase phone usage is massively different on a day to day basis, even if you dont think it is, it is. there is background data, text messages/calls, notifications, etc. (which is why i said to put it in airplane mode, that way its just sitting there, with little to no variables)
i guarantee you that you are putting way too much thought into voltage settings. they do not help as much as people want them to. dont say im wrong until you actually try what i said above. although youre probably nto going to.
vibrantoparanto said:
Still trying to bring back some life to my request with this argument: I just checked my girlfriends device (using zendroid 2.1.2 with bali 1.8.8uv) and couldnt believe it: 3 days and 14 hours since unplugged with 8% left. The battery is a stock 1500mHa. And as its my girlfriends phone its definity not "overtweaked and calibrated". Personally i care much more about standby time than super heavy usage (guess that should be fine then too).
Click to expand...
Click to collapse
sorry, but this does not prove anything. what are you comparing it to? your phone? you cant compare her battery life to your own unless you guys have the same exact setup, same exact apps, and same exact usage habits, etc.
you are not going about this battery things the right way. you NEED to be willing to learn more instead of trying to come up with your own reasons in your own head as to why your battery gets a specific lifespan. If getting THAT MUCH more battery life was as easy as UVing your phone, dont you think the manufacturers would incorporate that and use that as a marketing strategy?? "New from Samsung, the Galaxy S III!!! This will revolutionize the mobile industry, curing the battery woes across that smartphone world...now with lower voltage for drastically improved battery life!! Pick yours up today!!"
It's not that easy, you need to read up on what affects battery life.
thank you for your thoughts topshelf, but as i posted earlier i am on that topic for years now and i really tested a lot. not as scientific as running phone on idle with different frequenzies but trust me: I know a whole lot about this topic. Also i share your thought that the voltage is not that important in the end. On the other hand i have to say you guys are quite ignorant about my observations i did earlier:
1. The bali-x kernel with manual undervolting provides (provable) worse battery lifetime than
2. the 1.8.8uv kernel.
Conclusion: As you say it is not that much about the voltage but about the way the kernels work as a whole. On the other hand it would be *very* interesting if the insane battery lifetime of bali uv could be even further improved. And no i wont put my phone to sleep for days in order to do scientific test (whoever is willing to i will donate - battery lifetime almost like astrology)
Last but not least: It is true that different roms provide significantly different battery lifetimes - for whatever reason. Some roms turn your phone into a handwarmer, others give you almost the standby times you were used from the non-smarthpones. And i think even the big companies have a hard time to write device specific code that is highly optimized - i mean you still get new devices with gingerbread instead of ics and so on. conclusion: on the software side *is* much room for improvement if it comes to battery lifetime on most devices.
just my 2 cents
vibrantoparanto said:
i wanted to point out that this is a very interesting kernel with great battery lifetime. if you have a look at all the other threads of people desperatly trying to get 24h of battery then you probably wouldnt consider this request as "wasting free time of others for my own sake".
Click to expand...
Click to collapse
Look at your post, you and "others" are asking for some one to do research and development on their free time and for free ? little selfish on you.
Look at all the kernels thread in the development section and read thru all the comments, I bet there is far more people whining and complaining about this and that, than providing actually constructive and monetary feedback to the developers.
Its not as easy as it seams, ecotox already tried this before with his ultra low power kernels and some reported great succes while others couldnt even boot, it goes down to the quality of the silicon on each particular phone. no dev has the time/money to develop such request considering all the different variables involved.
lastly if you are so fond on this idea, why dont you take the initiative and learn to compile and patch and make your own kernel ?
Diff phone but a good simple guide to read:
http://arighi.blogspot.com/2011/08/howto-custom-kernel-on-samsung-galaxy-s.html
basic read:
http://stackoverflow.com/questions/5529470/how-to-compile-linux-kernel-for-real-android-phone
basic read:
http://igottadroid.com/wordpress/?p=61
For latest source:
http://opensource.samsung.com
"Be the change you want to see in the world." Mohandas Gandhi
Simple: If you want to change the world, start with yourself.
I'll read those links. Thanks for the info.
vibrantoparanto said:
And no i wont put my phone to sleep for days in order to do scientific test (whoever is willing to i will donate - battery lifetime almost like astrology)
Click to expand...
Click to collapse
im not trying to pick on you, but this sarcastic response shows your overall attitude that jrafael is trying to make you realize. you want somebody to take time out of their day/night to do something for you...yet you arent even willing to let for phone sit for a day in order to learn a thing or two...letting your phone sit doesnt even take any effort, compiling a kernel takes a lot more effort than that
i hate to say it, but why should someone help you, if you dont want to help yourself.
thank you jrafael for the links - thats a great read.
@topshelf: still think you overreact here. For one who has developed it and has the workflow it is a matter of a few minutes - and no one is forced to do anything unless he thinks its might be worth it - maybe its inspiring? i am just asking. not everything idea must be done by the one who thinks about it. and the quote about battery life is true i would say - we are really lacking valueable info on battery drain with different setups.
Hi
I'm new on this forum, have been lurking around before, but i digress.
I just got my SGII 2 days ago, and i'm in love with it (not literally, lol).
So, i already rooted it and today i backed up all my apps with Titanium Backup, and made a ROM backup with CWM.
Now, i find like many other users, that the battery life of JB is very poor on stock 4.2.1.
With WiFi on, and brightness settings on Auto, i lose about 2% in maybe 10-20 minutes.
When i game very shorty for only 5-6 mins i drop from 100% to 96 or 97% (don't know if this is normal or not with Minecraft and Asphalt 8, sometimes GTA 3 and Age of Zombies).
Now, with battery saving on, and brightness on the lowest settings (not auto), the battery life is alot better ofcourse, but still the battery drains pretty quickly when i'm playing a game (losing 3% maybe every 8 mins?).
Is this normal with JB or is there something wrong with my battery?
Also, if it's just the ROM, can you advice me a ROM with good battery life, preferably android 4.4?
Also, i read about Cyanogenmod 11, how is the battery on that ROM?
Thank's in advance!
Sorry if there'are any spelling errors, i'm Dutch
EDIT: sorry, my post was a bit incomplete
Battery resource usages.
Screen: 51%
Android-system 16%
Mobile standby 5%
Media server 3%
Those are some of the apps that eat up battery
3% in 30 to 40 minutes with Wi-Fi on?
I'd recommend you don't change a thing. Consider yourself fortunate because those are good numbers.
Unfortunately, Camera has stopped.
Perry2547 said:
3% in 30 to 40 minutes with Wi-Fi on?
I'd recommend you don't change a thing. Consider yourself fortunate because those are good numbers.
Unfortunately, Camera has stopped.
Click to expand...
Click to collapse
Sorry, corrected the post, 30-40 mins was incorrect
Also, another question, when installing a custom ROM, does it matter if it's a T-Mobile version or Vodafone?
Or doesn't that matter as long as its for the i9100?
Carrier specific custom roms ?? Not sure what you mean by that; there's no such thing.
If you mean 'Can I flash a stock rom for a different country or carrier ?', the answer is yes.
I strongly recommend you read the guides/tutorials stickied near the top of General section. This will give you a good grounding in 'the basics'. If you're going to be modding your phone at all, you'd much rather read & learn, rather than learn the hard way & end up with a busted phone.
MistahBungle said:
Carrier specific custom roms ?? Not sure what you mean by that; there's no such thing.
If you mean 'Can I flash a stock rom for a different country or carrier ?', the answer is yes.
I strongly recommend you read the guides/tutorials stickied near the top of General section. This will give you a good grounding in 'the basics'. If you're going to be modding your phone at all, you'd much rather read & learn, rather than learn the hard way & end up with a busted phone.
Click to expand...
Click to collapse
Hi, thanks for your help
I just installed JellySnap, AWESOME ROM, already seeing significant change in speed and battery life!
Definitly be posting around these forums, and thanks for your help again
I'm smacking the "Thanks" button for you!
Mod Edit
"Best" or "Recommend" ROM/kernel threads are not allowed on XDA.
Please test these things for yourself.
This is the only way you will get an unbiased opinion, and then, you can decide for yourself if it meets YOUR needs.
Don't forget to make a nandroid before you start.
Thread Closed
ronnie498
Forum Moderator