guys, I've been struggling with you all that my SGS2 is jumping from 3G <-> H <-> H+ and I don't know if it costs extra battery, but I'm kinda tired with the 1-2 seconds lag whenever I wanna use the data (like browsing).
I would like to know if there's a way to use ONLY HSPA but not the 3G? I know there is a way to disable HSPA leave only 3G, but I want it vice versa, at the end of the day it's an expensive device and I want to use fast connection on it. my old HTC Desire stayed connected to H at all time and I felt good about it.
well, any idea?
If I'm not wrong, I think it's a good thing that it keeps switching between HSPA and 3G. If it needs to download/upload large amount is data, it'll use HSPA and it'll switch back to 3G for normal usage which I think save battery in long term.
Sent from my GT-I9100 using XDA App
WCDMA
Have you tried using WCDMA only mode? This still lags?
For your question, dial *#301279#, change HSPA revision and release 5(HSDPA only). To return to previous setting, release 6.
HSDPA drains the battery a lot. 3g helps when in standby.
washburn111 said:
HSDPA drains the battery a lot. 3g helps when in standby.
Click to expand...
Click to collapse
This is what I believe as well. The phone should switch to 3G when sleeping / stand-by to save battery... but for some reason, each time I wake my phone up, I can see 'H' on the Data Connection instead of '3G'. If I unlock my screen and wait 5-10 secs, Data then switches to 3G. But if I lock it and unlock again, it's back to 'H'. This has been draining my battery more than when I have WiFi connected.
I've searched for this issue on google, this whole forum but just can't find a post discussing about this issue. Maybe I didn't use the right keywords... I've been searching: "samsung galaxy s2 sleep 3g hsdpa" , something along those lines. Of course I tried combinations like just sleep 3g or sleep hsdpa etc.
If there is a discussion regarding this, could you point me to it please or suggest keywords to search for.
Fast Dormancy
ShadowFlare said:
This is what I believe as well. The phone should switch to 3G when sleeping / stand-by to save battery... but for some reason, each time I wake my phone up, I can see 'H' on the Data Connection instead of '3G'. If I unlock my screen and wait 5-10 secs, Data then switches to 3G. But if I lock it and unlock again, it's back to 'H'. This has been draining my battery more than when I have WiFi connected.
I've searched for this issue on google, this whole forum but just can't find a post discussing about this issue. Maybe I didn't use the right keywords... I've been searching: "samsung galaxy s2 sleep 3g hsdpa" , something along those lines. Of course I tried combinations like just sleep 3g or sleep hsdpa etc.
If there is a discussion regarding this, could you point me to it please or suggest keywords to search for.
Click to expand...
Click to collapse
Are you talking about fast dormancy?
When Hspa is turned on when you unlock your phone, maybe there is an app or a widget that calls out for an internet connection? Those widgets that refresh in a couple of minutes maybe? Because in my experience H is only called when data is needed.
I'm aware of Fast Dormancy and the way it works, but definitely not what causing it to stay idle in H mode. I've switched it off before and still the phone wakes up to H signal.
One app I know to use the Data connection every hour is Beautiful Weather widget. I've disabled refresh-on-wake so it will only update hourly.
Related
Hi all.
I have had my N1 for a little over a week now, and the battery life i guess is normal for a pda with this power etc, but i read over on modaco that by changing over the settings from CDMA preferred to CDMA only, actually increased the battery life loads! So I tested this and indeed it does nearly double my battery life..
I have also now read from an add for the new HD2 that the battery life is again increased by swithching over to GSM only! Look at the battery details quoted for the HD2 below.
Talk Time –
Up to 320 minutes for WCDMA
Up to 380 minutes for GSM
Standby Time –
Up to 390 hours for WCDMA
Up to 490 hours for GSM
I am now testing GSM only, and guess that the battery life is going to increase yet again, awesome..
this looks promising but T-Mobile has lots of 3G dead spots scattered around even a major city like NYC, meaning if I would set the phone to WCDMA only and put it in my pocket, I would not receive any calls or data when not in a 3G area.
gadjet said:
Hi all.
I have had my N1 for a little over a week now, and the battery life i guess is normal for a pda with this power etc, but i read over on modaco that by changing over the settings from CDMA preferred to CDMA only, actually increased the battery life loads! So I tested this and indeed it does nearly double my battery life..
I have also now read from an add for the new HD2 that the battery life is again increased by swithching over to GSM only! Look at the battery details quoted for the HD2 below.
Talk Time –
Up to 320 minutes for WCDMA
Up to 380 minutes for GSM
Standby Time –
Up to 390 hours for WCDMA
Up to 490 hours for GSM
I am now testing GSM only, and guess that the battery life is going to increase yet again, awesome..
Click to expand...
Click to collapse
u do know that with WCDMA you will get far better speeds than just plain old gsm right?
Setting it to WCDMA only will actually drain your battery faster if you are in an area with poor 3G. So only use it when you have optimal 3G conditions.
Amon_RA said:
Setting it to WCDMA only will actually drain your battery faster if you are in an area with poor 3G. So only use it when you have optimal 3G conditions.
Click to expand...
Click to collapse
Faster yes. But noway worth the hassle of toggling it on or off. Unless you don't like to charge your phone each night then its not a prob. I use 3G/wifi,music,games and my battery easily survives a day or two.
Cheers..
Amon_RA said:
Setting it to WCDMA only will actually drain your battery faster if you are in an area with poor 3G. So only use it when you have optimal 3G conditions.
Click to expand...
Click to collapse
Thanks for that Amon_RA, and a personel thanks for for RA-nexus-v1.5.3
I guess my phone usage is split 50/50, i.e 50% at work with a max 3G signal, and 50% at home with a weak 3G signal. I definately saw a massive increase in my battery life when on WCDMA only, so changing to GSM should benefit me even more. I live in the UK and am on the Orange network, overall the 3G coverage is not to bad.
I will report back after a couple of days testing.
Good news for me: there is basically no 3G coverage here so guess I'll be GSM all the time. Getting my N1 this afternoon.
Is it just me or am I not seeing a 200% increase? 20% maybe.
how do i actually choose which band to use? been trying and didnt see any options.
in your dialer dial *#*#4636#*#* then go to phone information > set it to WCDMA only (3G only). Default is WCDMA preferred.
thanks! guessed i learned something new today
Hi again everyone..
Well one day into testing GSM only, what a difference in the battery life..
This is my default setting definately when on holiday to save on power, and when I am not using data roaming. But the speed difference is bummer, i.e GSM only gives me GPRS slow-ish speed, and not fast speeds that 3G gives you, if you are in a 3G area that is.
I have now found an easier way to switch bands, well at least between CDMA preferred and GSM only mode's, and you don't have to switch off your N1 or even put it into flight mode anymore.
1-Swap your band to GSM only mode via phone keypad.
2-When you need 3G speed if available just go to settings/wireless & network settings/mobile network settings, and untick box to use only 2G networks.This re activates the CDMA preffered mode.
3-When you want to go back to GSM only mode, re tick 2G box as detailed in 2 above.
If you use GSM, and by extension GPRS, most if not all of your calls will go to voicemail. 2G only means your phone can do either voice OR data at a particular time - eg If you're browsing or reading messages or syncing you wont get calls. Conversely if you're talking on the phone you can't browse the web. This is why 3g is so much better - you can do both simultaneously.
You may already be aware of this but I thought I'd mention it just in case you weren't.
SC
ScaredyCat said:
If you use GSM, and by extension GPRS, most if not all of your calls will go to voicemail. 2G only means your phone can do either voice OR data at a particular time - eg If you're browsing or reading messages or syncing you wont get calls. Conversely if you're talking on the phone you can't browse the web. This is why 3g is so much better - you can do both simultaneously.
You may already be aware of this but I thought I'd mention it just in case you weren't.
SC
Click to expand...
Click to collapse
actually when android receives or makes a call on EDGE / GPRS it automatically turns off data to allow the call to get through.
This is a must solution if you are on AT&T, with the phone only being gsm capable for me it has increased my battery life by I say 20-30% and going into settings also and switching to only use 2g networks works amazing.
I wonder if there will ever be an AT&T nexus AT&T thats what all my family use..
-Charlie
melterx12 said:
actually when android receives or makes a call on EDGE / GPRS it automatically turns off data to allow the call to get through.
Click to expand...
Click to collapse
AT&T doesn't support this (or didn't a year ago when I last looked into it) for incoming calls, so be careful if you're using AT&T (of course, if you're on AT&T there's no other option).
T-Mobile supports this, so it'll work fine.
melterx12 said:
in your dialer dial *#*#4636#*#* then go to phone information > set it to WCDMA only (3G only). Default is WCDMA preferred.
Click to expand...
Click to collapse
thanks alot for this code it helped
I dont know why everyone is treating this GSM vs 3G battery life stuff as if its something new..
Those who remember, the iPhone 3G suffered from the very same issue...
wooo hooo!
Poll in..
Finished testing..
GSM only mode is a definate winner as far as battery life goes, but the down side side is the slow data speed side, and the fact that you can't recieve calls when say surfing, or when data is being downloaded in back ground, it just goes to voice mail... Try it.. change to GSM mode, phone yourself via a land line while surfing etc and see your calls go to voice mail.
The easy switching via the 2G mode does help, and you can swap as and when required, but as alot of my current N1 apps connect to the web for updates etc (beautiful widgets for weather updates, e-mail checking etc) I will stick to CDMA only mode for now, and just use GSM mode when I go on me hols abroad when I don't use data at all.
gadjet said:
Finished testing..
GSM only mode is a definate winner as far as battery life goes, but the down side side is the slow data speed side, and the fact that you can't recieve calls when say surfing, or when data is being downloaded in back ground, it just goes to voice mail... Try it.. change to GSM mode, phone yourself via a land line while surfing etc and see your calls go to voice mail.
The easy switching via the 2G mode does help, and you can swap as and when required, but as alot of my current N1 apps connect to the web for updates etc (beautiful widgets for weather updates, e-mail checking etc) I will stick to CDMA only mode for now, and just use GSM mode when I go on me hols abroad when I don't use data at all.
Click to expand...
Click to collapse
Receiving calls during 2D data transfer is a feature that needs to be supported by your mobile network. Your mobile operator probably needs to implement a Gs interface and change the Network Operation Mode. That way your phone can be paged during 2G data transfer and you'll be able to receive the call.
Hey, I have an USA T-Mobile Vibrant.
It is rooted and running the Vibrant edition of Darky's 9.3 Final ROM.
I am also using the latest overstock kernal and the honeycomb 2.0 theme from the I9000 forums.
Enough background info. This isn't really a problem as much as my curiosity.
My phone almost constantly is switching back and forth between 3G (UMTS) and H (HSDPA) on my data connection.
It doesn't seem to affect battery life or service too much (though H might be faster), so I'm not worried; but does anyone know what the deal is with this?
Thanks ahead of time!!!
Sent from my Vibrant using XDA App
Mine has been doing this lately as well. It's only been happening since I installed my current ROM (Trigger 2.7).
Noticed this just now as well...might have something to do with the mods to show H or 3G.
I wonder if it has anything to do with signal strength. I know that shouldn't make a difference but I can't think of any other reason.
Sdobron said:
Noticed this just now as well...might have something to do with the mods to show H or 3G.
Click to expand...
Click to collapse
I would agree, but I went to my settings/ phone info/ signal page and the reason it was changing was because it was physically switching between UMTS and HSDPA.
Why? I have no idea.
I do live in a T-Mobile 4G enabled area, though I am not on their so called "4G plan".
I did notice that it did not have this switching problem on Bionix Frost-u2.
So, if anyone has some insight, please help us all understand
CrazyCharlie said:
I wonder if it has anything to do with signal strength. I know that shouldn't make a difference but I can't think of any other reason.
Click to expand...
Click to collapse
I was just watching my signal strength change and it doesn't seemed tied to the change from 3G to H.
For example, it would be around 67dBm and be on UMTS. Raise to up to around 75dBm and be on UMTS. Then it would switch to HSDPA and still be at 75dBm or sometimes lower down to 69-72dBm and still be on HSDPA.
So with that type of cross-over stats, I would be skeptical of that solution.
HSDPA is a temporary data link. If it was on continously the phone would have very poor battery life.
When network server has a data packet for your phone it 'pages' up your HSDPA capability. Your phone can also request HSPA to initiate a data transmission.
The HSPA paging process is similar to receiving and initiating a voice call.
If no more packets have qued at their server or received from your phone after some period of time it will revert to normal 3G battery saver cycling. It has to be re-paged up to reinitiate HSPA data link. The wake up HSPA function does add some initial delay.
So is there a way to force it to stay on HSPA while tethered, for example? (Or always)
Im so pissed off at this phone. Supposed to be fast but my browsing experience sucks because of this delay between 3g/h+
Before I get flaimed I have read before, I tried fast dormancy off, I tried disabling H+ and putting 3g only but the same delay exists. I also tried putting the phone in wcdma mode so edge gets removed.
I don't know what to do, I came from an iphone 4 and although the pages load slower because of hardware I could actually see the data progress going and loading up, here my sgs2 just stands for 10 seconds doing nothing and then loads up the page fairly quick.
Sometimes it doesn't even load and says page could not be loaded even though I have the h+ icon on.
Now If anyone experiences this and has some sort of fix plz let me know.
Im running westcrip 9.6 with lph, and have had this issue in previous roms too.
My network is Claro Dominican republic
Thanks
I have a similar problem! In my case the phone suddenly switches from H to 3G, I don't know why, and then goes back to H. This happens while I'm using browser, generally when I activate data connection and I don't use anything, it remains on 3G
My problem is that sometimes the delay may be 2 seconds and its managable but then it can go up to 15 or not do anything at all.
Same problem, I thought it's ok, but if it's not, then how to manage your data, without any delays?
just in case for someone who might know how to fix your problem u should give them/us information about:
your rom
your kernel
your modem
rooted or not
ps. wrong section btw...
warrez said:
just in case for someone who might know how to fix your problem u should give them/us information about:
your rom
your kernel
your modem
rooted or not
ps. wrong section btw...
Click to expand...
Click to collapse
carrier and location (country) would be good too.
EDIT: whoops, saw it's in the first post. Sorry.
Its normal to go from G to H+ when data is in use. As soon as the phone detects that it needs to access the network, it will achieve the H+ connection. Apparently it will kill the battery if its always on H+. This, I understand. But the part I do not understand is the delay from G to H+. I am not sure if its a carrier issue for most of us, or the phone itself. I am assuming its a carrier issue though as it has happened on every ROM or Modem I have tried from personal experience. Not sure about the OP. It does seem to take some time at times to get from G to H+ - upwards of 15 seconds or more. Also, if it can't get H+, it will not browse at all on 3G
blue265 said:
Its normal to go from G to H+ when data is in use. As soon as the phone detects that it needs to access the network, it will achieve the H+ connection. Apparently it will kill the battery if its always on H+. This, I understand. But the part I do not understand is the delay from G to H+. I am not sure if its a carrier issue for most of us, or the phone itself. I am assuming its a carrier issue though as it has happened on every ROM or Modem I have tried from personal experience. Not sure about the OP. It does seem to take some time at times to get from G to H+ - upwards of 15 seconds or more. Also, if it can't get H+, it will not browse at all on 3G
Click to expand...
Click to collapse
I get the same issue with the 3G. It won't load anything on 3G connection but as soon as it switches to H or H+ it starts to load.
imlgl said:
I get the same issue with the 3G. It won't load anything on 3G connection but as soon as it switches to H or H+ it starts to load.
Click to expand...
Click to collapse
Yep, same problem in Moscow. It's probably related to device, nor to carrier. Kinda odd.
imlgl said:
I get the same issue with the 3G. It won't load anything on 3G connection but as soon as it switches to H or H+ it starts to load.
Click to expand...
Click to collapse
+1 for that..hate that...
So i guess there is no fix for this
Sent from my GT-I9100 using xda premium
mcvigo said:
So i guess there is no fix for this
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
I don't think so. Seems to be a device issue. I just took a look at my Blackberry Bold 9900 I use for work and it always has H+. It doesn't go to 3G and then to H+ like the SGS2 does. And when I browse on that, its always ready to go, no delay. Not sure why our SGS2 needs to handshake H+ everytime
In my case it seems to depend upon the modem I use. kL1 works really well, however when I trialed ICS it was really slow as described.
Also, far less related, as for the mention of browsing, I use Dolphin and find that it seems to be much slower at either DNS lookups or redirects or something.
It's most likely because of your carriers settings. There's nothing you can do unless you call them questions about what their policy is at their end on data connectivity.
Ever since I've transferred to AT&T I've had laggy data issues. I finally rooted/flashed to AOKP, and while trying to address the issues of no APNs appearing or saving and no signal status in the status bar, I've come to find both AT&T and T-Mobile as Available Networks under some network setting. Am I chasing ghosts here, or is there something actually up?
EDIT: So I really need help troubleshooting the issue. I'll logcat, dump, or whatever necessary. I've been in many cities/areas and this problem persists: if I haven't used data or the phone hasn't been backgrounding traffic, it'll take anywhere from 5 to 30 seconds before a connection is made when I try to access an internet-related function on my phone (even though 3G/H is displayed in the status bar). Out of shear frustration (this has been happening since I got the phone, under stock ROMs and now under AOKP), I tried messing with *#*#info#*#*. I changed WCDMA-preferred to WCDMA-only -- no improvement. Oddly, I also tried GSM-only. Well, great improvement! Even though I only have E, there is absolutely no latency in waiting for a connection -- so pages and other data end up loading faster on Edge than 3G !
I have absolutely no idea why my phone takes forever to make a connection. Under 3G, I see only but a few upstream network activity blips (even under full bars) for as much as 30 seconds, before there is any downstream activity (and when it comes, it comes). Can anyone help???
P.S.: I'm going to try using a friend's SIM later for comparison.
joebobjoe said:
Ever since I've transferred to AT&T I've had laggy data issues. I finally rooted/flashed to AOKP, and while trying to address the issues of no APNs appearing or saving and no signal status in the status bar, I've come to find both AT&T and T-Mobile as Available Networks under some network setting. Am I chasing ghosts here, or is there something actually up?
Click to expand...
Click to collapse
Because they both share the 1900MHz band I believe.
Red5 said:
Because they both share the 1900MHz band I believe.
Click to expand...
Click to collapse
I'd like to know if it shows up for anyone else?
joebobjoe said:
I'd like to know if it shows up for anyone else?
Click to expand...
Click to collapse
On AOKP it does for me too. Just ignore it.
Red5 said:
On AOKP it does for me too. Just ignore it.
Click to expand...
Click to collapse
An aside: does your phone stay on 3G and switch to H only under moderate network traffic?
joebobjoe said:
An aside: does your phone stay on 3G and switch to H only under moderate network traffic?
Click to expand...
Click to collapse
The phone displays 3G because thats what it is... then when data is being processed, it shows H because its using the "what AT&T calls 4G but its really HSPA" side of the network. For just standby time with no data, its going to show 3G because HSDPA is traffic, not standby.
Red5 said:
The phone displays 3G because thats what it is... then when data is being processed, it shows H because its using the "what AT&T calls 4G but its really HSPA" side of the network. For just standby time with no data, its going to show 3G because HSDPA is traffic, not standby.
Click to expand...
Click to collapse
Well that's strange. I'm used to phones displaying what network-level they are capable of. So why would it not just display H for HSPA+ when HSPA+ service is available, instead of only displaying under traffic.
I'm going to go ahead an edit this thread to help troubleshoot what I think to be the main issue.
After some trials I see that the network indicator switches back and forth between 3G and H a few tines before making the connection and transmitting data. Hmmm...
Basically, "4G" will eat your battery alive so the phone idles at 3G and jumps to H+ only when you use data. If you were on a "stock" ATT rom it would always read H+, but this is technically false since when its idle the phone sits in 3G. CM9 and AOKP accurately display it which is why you see the switch.
Sent from my SGH-I777 using Tapatalk
I have a HTC Amaze for a phone and the Galaxy S2 is my media player. Sometimes, when I don't feel like carrying around two devices, I put my T-Mobile SIM in the galaxy and use it as my phone. I must say, Edge is not as slow as I remember it being. Maybe speed is contingent on network traffic. If thats the case, instead of using crowded "faux G" networks, I may defer to Edge to save battery life and get good dl/ul rates.
My phone does the same thing. I noticed it sometime ago. When idle 3g. Internet I get H+. This is with both Shostock2 and Phone Bricker. I was curious to know too but just blew it off because it really doesnt make any difference to me as long as Im getting decent speeds. Im not even with ATT anymore. Went with Straight Talk. Which uses ATT towers. Cant beat the price!!
They don't have the correct apns, but that symbol problem is because the phone doesn't use hspa+ passively, only actively. It causes some lag when downloading, but it is faster fit large data. But your problem is due to a supposed imei range with bad modems. Rehash stick, fix the triangle, and return it.
Sent from my GT-I777 using xda premium
I'm confirmed that my hometowm support the 21M hspa+ network,but why my gs3 can't lock the hspa+ network.When I open the data,H+ just showed at a very short time,and then it turns to H.
And I moddified the build.prop hsxpa=2,and flash the modem.but it just can't lock:crying:who can help me. thanks
I'm pretty sure that phones will only go to H+ if they actually need it. Hence you'll find that if you start requesting data, it will switch over to H+ again, and then revert to basic H when it's done. Probably not an issue.
anthropolyte said:
I'm pretty sure that phones will only go to H+ if they actually need it. Hence you'll find that if you start requesting data, it will switch over to H+ again, and then revert to basic H when it's done. Probably not an issue.
Click to expand...
Click to collapse
thanks,I know what you said,but I want to ask is that even it starts requesting data,it just stay at H,not H+.It just show at a very short time ,then it turns to H and alaways to be H.
In which case it's a problem with either your network provider or your phone. I'd suspect your provider primarily; give them a call and see if they can help.
anthropolyte said:
In which case it's a problem with either your network provider or your phone. I'd suspect your provider primarily; give them a call and see if they can help.
Click to expand...
Click to collapse
thanks,but gs2 can lockI'll call them tommorow
anthropolyte said:
In which case it's a problem with either your network provider or your phone. I'd suspect your provider primarily; give them a call and see if they can help.
Click to expand...
Click to collapse
and I have tried my white one and the blue one,it all can't,may be I should connect the network engineer
To expand to what anthropolyte said, the GS3 has a Fast Dormancy mode, where it'll connect to H+ network when is truly needed (heavy surfing/streaming, etc), and when the phone is mainly idle or doing light/periodical syncing, it'll switch back down to H or even 3G to conserve battery. As far as I know, Fast Dormancy must be supported by your carrier (which it does in your case) and must have a compatible phone to toggle between different network mode (GSM/HSPDA/UMTS, etc) to increase battery life.
lude219 said:
To expand to what anthropolyte said, the GS3 has a Fast Dormancy mode, where it'll connect to H+ network when is truly needed (heavy surfing/streaming, etc), and when the phone is mainly idle or doing light/periodical syncing, it'll switch back down to H or even 3G to conserve battery. As far as I know, Fast Dormancy must be supported by your carrier (which it does in your case) and must have a compatible phone to toggle between different network mode (GSM/HSPDA/UMTS, etc) to increase battery life.
Click to expand...
Click to collapse
but I have tried a lot of network things to do,such as online video,downloading sth,and etc.I saw there is nothing can even use the hspa+ network.I'll connect the network engineer and I think this is their problem.btw thanks a lot,and I'm a chinese user
mine alternates between 3g and H+ too. It bumps it up to H+ when I start using apps. The slight lag before it kicks in is not a bad trade off for better battery life.
anthropolyte said:
In which case it's a problem with either your network provider or your phone. I'd suspect your provider primarily; give them a call and see if they can help.
Click to expand...
Click to collapse
I called them,they told me nothing about how to deal with it or they didn't want to amdit this problem,and they told me to ask samsung for help.....
when I was in their business hall,I tested a i9100 and my 9300 white and blue,when i9100 requests data,9100 change to H+,but all of my 9300 can't change to H+,just stay at H,my god.....:crying:
HTCHD2ireland said:
mine alternates between 3g and H+ too. It bumps it up to H+ when I start using apps. The slight lag before it kicks in is not a bad trade off for better battery life.
Click to expand...
Click to collapse
Same here. 3G <---> H <---> H+ but when I start using apps like Youtube, H+ kicks in and everything is ok...