Develop Bugs

Weak !! 4G signal/service on custom roms ,not on stock.

I've bin pretty disapointed with the roms signal and service strength on my G2 lately.
When I bought my fone I had full 4G bars all the time in my area and at home, so it can't be that "towers" moved or network error. I can explain why.
First with stock rom I got it all bars, rooted and everything.
I notice the signal change once I jump to a rom first was virtuous, I get 3G all the time..speed test sucks and it sometimes goes to edge. It goes to 4G once in a blue moon...for only like 6 seconds max. I swear.
Than I go back to stock "backup" and my signal strength is back to awesomeness and check speedtestt and they're out of hand perfect.
So I stayed stock for a bit, tried other roms and same crap.
Stayed stock for a bit more longer, now on cm 6.1.1 and its not as bad as it was but its really bad still. Edge is on as I speak at a spot where 4G is full strength all the time at my house.
I need help figuring out what's the cause? Is it a kernel? Or something? If so can I flash the stock one for it on the cm so I can have my stock speed since its the best?
Or what can it be?
Pleeeaaasee help ! I wanna enjoy this rom,but without excellent signal/service strength it means nothing at all to me but back to boring old stock...
Thanks..
Sent from my HTC Vision using XDA App

did u check ur apn?

Not really, but it shouldn't have bin touched since the apn isn't in stock.
Just don't get why all of the custom roms have bad service but when I got back to stock with root and all the service goes back to being excellent again.
Sent from my HTC Vision using XDA App

Compare 6.1.1 and stocks build.prop files
Maybe you will find your answer there?

Another point to make is that the stock rom doesn't show a 3G icon.....it just displays the 'H' icon regardless of whether you are on 3G or 4G.
So when using the stock ROM, you just *thought* you were getting 4G all the time when you were actually only getting 3G connections.
On the non-stock ROM's, they actually differentiate between 3G and 4G. Thus you get to see when you are 'really' using 4G and the few times you actually get 4G speeds.
It's all a marketing game by the providers.

f4phantomii said:
Another point to make is that the stock rom doesn't show a 3G icon.....it just displays the 'H' icon regardless of whether you are on 3G or 4G.
So when using the stock ROM, you just *thought* you were getting 4G all the time when you were actually only getting 3G connections.
On the non-stock ROM's, they actually differentiate between 3G and 4G. Thus you get to see when you are 'really' using 4G and the few times you actually get 4G speeds.
It's all a marketing game by the providers.
Click to expand...
Click to collapse
Your right, the stock rom doesn't differentiate between umts n hspa. But one thing I noticed is that all rooted roms have a slight lag when switching from umts n hspa.

I can totally attest to this statement. Stock data access speeds and signal is much better than custom ROMS. It must be something that is missing in the kernel or maybe the ROM itself. Dont think it is the radio because no one has mentioned flashing another radio in any of the stock roms list so far.
I am on CM 6.1.1 right now and I really want this ROM to have the same signal as the stock....

I have the same thing on mine. When I tried cyananogen my signal was crap. I would get slower speeds and less service overall. Same for MIUI. Couldn't handle it and went back to stock. Not to be unapreciative to rom developers but its hard to beat stock connection and battery life
Sent from my T-Mobile G2 using XDA App

rumitg2 said:
I have the same thing on mine. When I tried cyananogen my signal was crap. I would get slower speeds and less service overall. Same for MIUI. Couldn't handle it and went back to stock. Not to be unapreciative to rom developers but its hard to beat stock connection and battery life
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
I agree, I'm currently back to stock till someone finds out what's the problem and fixes it.
This clearly states its not only me.
Sent from my T-Mobile G2 using XDA App

f4phantomii said:
Another point to make is that the stock rom doesn't show a 3G icon.....it just displays the 'H' icon regardless of whether you are on 3G or 4G.
So when using the stock ROM, you just *thought* you were getting 4G all the time when you were actually only getting 3G connections.
On the non-stock ROM's, they actually differentiate between 3G and 4G. Thus you get to see when you are 'really' using 4G and the few times you actually get 4G speeds.
It's all a marketing game by the providers.
Click to expand...
Click to collapse
Wish you where right, but I wouldn't post this up if it was just that.
I tested the speeds out with speed test and my results cleary show that stock has perfect 4G speeds. also used tethering and on my ps3 it loses connectiong with custom roms. When usually it doesn't . So, it couldn't be that. Download speeds and everything lags a lot, and I go to edge awhole lot where I'm at when I'm always in 4G.
Sent from my T-Mobile G2 using XDA App

I have owned many diff types of android phones. And all were rooted with custom roms and all exhibited the "laggy umts to hspa switch."
might be something we r gonna have to comprimise...
On an unrelated note. My n900 from nokia is capable of hspa plus but only till about 10mb where as my g2 can pull in about 14mb. Today I noticed that the n900 consistently hovers around 5-7mb per second where as my g2 hovers around 2mb-4mb per sec lol.
Can't wait for the nokia n9.

I'm confident your answer is in /system/build.prop. Check the HSDPA and HSUPA categories.

funkeee said:
I'm confident your answer is in /system/build.prop. Check the HSDPA and HSUPA categories.
Click to expand...
Click to collapse
And what do I do here?
Is it possible, that everyone that owns a G2 having this problem but doesn't notice it?
We need to let people know.
Sent from my T-Mobile G2 using XDA App

It's gotta be something in the software, a setting gone awry or accidentally unnoticed, a line in the kernal code or something.
Eventually CM or someone will figure it out and we'll enjoy "4g" speeds even while ROM'd up.

AbsolutZeroGI said:
It's gotta be something in the software, a setting gone awry or accidentally unnoticed, a line in the kernal code or something.
Eventually CM or someone will figure it out and we'll enjoy "4g" speeds even while ROM'd up.
Click to expand...
Click to collapse
I believe its in the build.prop file. Rodriguezstyle once released a beautiful black n green rom for the nexus one. It didn't exhibit the umts to hspa lag. I remember reviewing his build.prop. it was definately very different from what I have seen in the past

sheek360 said:
I believe its in the build.prop file. Rodriguezstyle once released a beautiful black n green rom for the nexus one. It didn't exhibit the umts to hspa lag. I remember reviewing his build.prop. it was definately very different from what I have seen in the past
Click to expand...
Click to collapse
Is it possible to port his build.prop into one of our existing ROMs? Maybe that'll fix the problem.

Ive compared the build.prop files from a stock backup and 6.1.1 and there's nothing in there in the communication settings that would be causing this. They're literally the same going down the list.
It must be the new radio 6.1.1 uses which isn't the Tmobile stock radio. That's the only thing that could be affecting communications (bars and data speeds).
But I agree I'm seeing similar results i an HSPA+ area where Speedtest seems to get stuck and wobble around 1.5mb down like its some kind of cap or something. Haven't seen a huge signal bar drop though.

klmsu19 said:
Ive compared the build.prop files from a stock backup and 6.1.1 and there's nothing in there in the communication settings that would be causing this. They're literally the same going down the list.
It must be the new radio 6.1.1 uses which isn't the Tmobile stock radio. That's the only thing that could be affecting communications (bars and data speeds).
But I agree I'm seeing similar results i an HSPA+ area where Speedtest seems to get stuck and wobble around 1.5mb down like its some kind of cap or something. Haven't seen a huge signal bar drop though.
Click to expand...
Click to collapse
Compare stock to cm 6.1.1?

sheek360 said:
Compare stock to cm 6.1.1?
Click to expand...
Click to collapse
Yes stock ROM to CM 6.1.1 was what I meant. Nothing different in build.prop that would affect the radio portion. Just some memory tweaks but that would have nothing to do with the signal or data speeds.

klmsu19 said:
Ive compared the build.prop files from a stock backup and 6.1.1 and there's nothing in there in the communication settings that would be causing this. They're literally the same going down the list.
It must be the new radio 6.1.1 uses which isn't the Tmobile stock radio. That's the only thing that could be affecting communications (bars and data speeds).
But I agree I'm seeing similar results i an HSPA+ area where Speedtest seems to get stuck and wobble around 1.5mb down like its some kind of cap or something. Haven't seen a huge signal bar drop though.
Click to expand...
Click to collapse
klmsu19 said:
Yes stock ROM to CM 6.1.1 was what I meant. Nothing different in build.prop that would affect the radio portion. Just some memory tweaks but that would have nothing to do with the signal or data speeds.
Click to expand...
Click to collapse
Oh ok. Sorry for the confusion.
After the new g2 update I actually got stronger signals n better data speeds though. I don't think downgrading the radio will help....
But its worth a go I guess

[Q] Terrible 3G speed and GPS doesn't lock (VZW), What can I do?

Well, pretty much I have tried hybrid 1 and 3 radio. I tried 4.0.2 and 4.0.4 radio. I have tried stock, Gummy, LiquidSmooth. I tried 3 different kernels.
What can else can I do? I bought this from a user on here and he swears they never had any issues and I completely believe him. I'm just wondering what is causing mine. I get about 50-150 KB/s speeds down and about 700-1000 KB/s upload... I don't understand the vast difference.. It has to be fixable.
Other than calling VZW, which I will do if I can't resolve this, what can I do?
Please help me oh great overlords of XDA!

For GPS signal lock, try updating your AGPS.
Download GPS Test
https://play.google.com/store/apps/details?id=com.chartcross.gpstest&feature=nav_result
And go into options
"Clear AGPS"
and then I restart my phone (not sure if this makes a different but it's always a good idea to start clean)
then go back into the app and "Update AGPS"
This not only enabled me to get a lock but it also drastically decreased the time it took to get a lock.
Not sure about your 3G speed, maybe low signal which you can't really do anything about.
Hope this helps.

Mixmaster333 said:
For GPS signal lock, try updating your AGPS.
Download GPS Test
https://play.google.com/store/apps/details?id=com.chartcross.gpstest&feature=nav_result
And go into options
"Clear AGPS"
and then I restart my phone (not sure if this makes a different but it's always a good idea to start clean)
then go back into the app and "Update AGPS"
This not only enabled me to get a lock but it also drastically decreased the time it took to get a lock.
Not sure about your 3G speed, maybe low signal which you can't really do anything about.
Hope this helps.
Click to expand...
Click to collapse
Awesome. That helped amazingly. Now all I need is my 3G fixed and I'm all set.
I doubt its low signal. About as many bars as my mother's iPhone.

Shamrock13 said:
I doubt its low signal. About as many bars as my mother's iPhone.
Click to expand...
Click to collapse
"Bars" don't mean anything. Look at your dBm reading and compare it to similar phones in the same area in terms of dBm and speed on the same network.

martonikaj said:
"Bars" don't mean anything. Look at your dBm reading and compare it to similar phones in the same area in terms of dBm and speed on the same network.
Click to expand...
Click to collapse
I understand that, and I was going to include the decibels, but she left for work before I could. Roughly, I'm getting 100 KB/s and she's getting 1-2 MB/s in the same exact spot of our house.
I will include the actual decibels when she gets home. Also, how do I find the decibels of an iPhone? Seemed like I couldn't find a good Google result last time I searched for it.

You'll be able to tell which phone is the iPhone and which phone is the Nexus. http://imgur.com/a/VSJvo#0
I had them side by side, and the iPhone was getting about -68 dBm while the Nexus was getting about -80 dBm.
Regardless of the decibels, the speed difference shouldn't be that vast.

Turned off mobile data and then turned it on again. It seemed to give me a boost of speed because I was about to get 1.3 MB/s, but a follow up speed test garnered a 150 KB/s speed. I can't seem to win right now. Apparently, it doesn't matter what radio I use because it will still occur..

Let's give this a quick love tap to the top.

No help?

Bump..

Is Speedtest.net app accurate for Galaxy Nexus?

I just bought the galaxy nexus coming from sgs2 t989. After running speed tests, it says I have extremely low speeds over the air & wifi but when using the phone with data, it doesn't seem slower. Got 6gb/sec OTA & 12 wifi where on sgs2 12 gb/sec OTA & 20+ wifi....
Just wondering if anyone knows if speedtest.net app is accurate per your experiences?

Its as "accurate" as any speedtest can be. Its not exactly indicative of how fast data actually flows in real-world use.
Keep in mind that the T-Mo branded SGSII has a 42mbps HSPA+ radio, whereas the GNex has a 21mbps HSPA+ radio. Speeds will differ. As for WiFi, I'd say that's just a coincidence, speeds should be ~the same.

It seems to glitch sometimes with the GN and only measure DL speeds for a split second before stopping, I was able to fix it by changing servers though.

It should be 100% accurate. It's feeding you your actual speeds. It's just that HSPA+ isn't as consistent as LTE or other technologies. I usually get a consistent speed of about 20mbps with 2 bars outside.

Thanks for the input! Its as fast as I need it to be so I'm fine with what I am getting either way. Would be nice to be able to do some surgery & make a hybrid of the two phones tho... haha
The nexus def looks and operates much better than sgs2.

xHausx said:
It seems to glitch sometimes with the GN and only measure DL speeds for a split second before stopping, I was able to fix it by changing servers though.
Click to expand...
Click to collapse
I noticed something similar. It jumped to about 3mbs which is sadly typical for the tower closest to my house, stayed there for about a second then dropped to 500kbs for the rest of the dl test, but in real use it is typical of my sgs2 which test around 3mbs
Sent from my SAMSUNG-SGH-I777 using xda premium

Has anyone else noticed that the bandwidth graphs (where it shows the spikes and how consistent the connection is) on both sides of the actual current bandwidth readout (near the bottom directly below the gauge) don't work most of the time? I'm not sure if it's an issue with ICS or what, but usually it's just a white blur that kind of moves around as the test runs. I've only actually seen the lines on the graph a few times since I've had my Nexus. Pretty sure it always worked good stock, but on most custom ROMs, it doesn't show the lines on the app. Sometimes it does, but not usually. I've played around with the options to see if it fixes it and it doesn't.

I see the graph every time. Turn off 2d hardware cause that breaks the speed test graph.

RogerPodacter said:
I see the graph every time. Turn off 2d hardware cause that breaks the speed test graph.
Click to expand...
Click to collapse
What do you mean by turn off 2d hardware? I don't see that as an option

I turn the 'animations' slider all the way to better performance and seem to avoid the glitching issue with it.

NCguy said:
What do you mean by turn off 2d hardware? I don't see that as an option
Click to expand...
Click to collapse
He means turn off "force GPU rendering" in developer options.

Yeah force hardware acceleration is known to break the speed test graph. But I guess that's not your issue if you didn't know about that setting in the first place.

RogerPodacter said:
Yeah force hardware acceleration is known to break the speed test graph. But I guess that's not your issue if you didn't know about that setting in the first place.
Click to expand...
Click to collapse
Correct, didn't know until I read these posts and like you predicted it was turned off.

[Q] VZW Extremely poor CDMA/LTE performance (Vicious JB 4.1 v5)

I'm at a loss here, but I know something is wrong for sure. I'm familiar with the low signal strength 'problem' on LTE networks as described at rootzwiki's thread entitled "This is why your Verizon Nexus signal "sucks" " I do not understand it inside and out, but I know enough to be at least 80% sure that this is not my issue. That thread describes a low signal strength, as in the dBm, but my problem is actual performance. I'm not comparing numbers (at least not on LTE networks), but results.
The problem is pretty bad, and pretty consistent. Without fail, my signal strength will be butchered, and with it data and even voice/text service will be unreliable or non existent inside any building. Not just some buildings, but any building. If I'm in a 4G area, I almost always lose the 4G, and it's switched to 3G with very poor performance (even for 3G standards). If I don't loose the 4G, the speed test results are horrid. I've had several cases where inside a building I still have 4G but the speeds might be 500-700 Kbps down/up or even worse, but when I step outside into the parking lot, 10-15 Mbps down 5-15 Mbps up. I realize structures absorb wireless signals and sometimes it can be pretty bad, but this is too much and too frequent to just be normal wireless signal degradation. It also doesn't seem to be the area because I've traveled through these areas before with my droid charge and I've never experienced issues anywhere close to this bad with my charge.
Some examples; the first time I noticed it was in the Greensboro, NC 4G area. Specifically at the Travel Centers of America about 10 miles east of the greensboro's border. When I first pulled into the truck stop (I drive a strait truck with a sleeper) I was pissed because my phone was on 3G, and I looked this area up before I came here on verizon's detailed 4G coverage map. This very truck stop was sitting in a dark maroon 4G area, NOT an extended 4G area. So I was angry, but I figured that there was an issue with the network, or the storm coming through was causing problems. Later the storm passed and I noticed (while walking back to my truck) that I was getting a strong 4G signal and good speeds, 5-10 Mbps down and 5 ish up. But as I sat back in even just the driver seat the signal strength dropped, and so did the speeds. I did a lot of tests later outside. I was performing speed tests at different locations all over the parking lot and I noticed the closer I got to the trucks, the poorer the performance. When I was inside my truck, and back in the sleeper, 4G was gone completely, taken over by a very poor 3G signal with slow speeds. I found that if I had my phone mounted on the windshield I was able to get reasonable 4G speeds, but still only a fraction of what I was able to get outside in the parking lot.
Another similar case happened in the Washington DC area at a walmart (Landover, MD). This time the 4G stuck even in the sleeper, but speeds were 2-3 Mbps down and about 700 Kbps up. While outside, however, 15 Mbps down and up.
Here I sit at another truck stop. This time, however, I'm in an extended 4G area (which of course means I have 3G) and I'm comparing my 3G signal strength to my Charge's signal strength. I know what I said earlier, but from what I understand about that "issue", gingerbread phones and earlier would give the CDMA signal strength because they couldn't read the 4G signal strength, but ICS and later can and so it displays the LTE signal strength. So wouldn't that mean that if you are in a 3G area, you can, in fact, accurately compare signal strength since they should both be displaying the CDMA signal strength? If that's the case, then what I'm getting is -100 dBm on my Galaxy Nexus and -87 dBm on my charge.
Something is most definitely wrong with my phone, but I don't know if it has anything to do with the Vicious JB stock rom I installed or not.
Vicious JellyBean 4.1 V5 is the version I installed, and I realize now that I did not install the latest (4.1.1 V1) but nonetheless I could not see it reported anywhere in the changelog, or any of the replies to the thread that there were very noticeable problems with the radio performance. I'm just at a loss and I really hope someone's reading this going "ah, I know exactly what that problem is". Although I'm never lucky enough to have a well known problem happen that there are fixes readily available for
Thanks very much for your time and help!

Bippity, boppity, bump!!
Sent from my Galaxy Nexus using xda app-developers app

I suggest you upgrade to the AOSP version that was released a couple of days ago. I have been running it for about 20 hours with very good results.
http://forum.xda-developers.com/showthread.php?t=1797996

JB issues?
Soundfx,
I've noticed some strange data problems as well. I've only had my nexus for 3 days. The first thing I did was throw a JB ROM (actually, about 9 of them to try them all out) on the device. (Vicious was one of them) What I noticed was that pretty consistently, about 5-10 minutes after the flash, my phone would go from having 4 bars of LTE to no signal at all. My connection would drop completely. Although I didn't figure this out until the latter flashes, I did remember having connection issues when I tried going to the play store or the internet on all the ROMs. I'd have to switch of LTE, and then I'd start working again. At first I just figured that I'm in some sort of LTE dead zone or something. But it seemed strange that my connection would drop completely and I couldn't get it back for 30-60 seconds.
SO, this morning I took my device back to stock. Unrooted ICS from Verizon. And although I wasn't at home for more than a minute to do testing, it appears that my connection problems have gone away. So I'm wondering if it is a radio issue for JB roms. All that to say that I don't think your problem is just the vicious rom. If you wouldn't mind, I'd suggest you trying another ROM and seeing if you have the same issues.
I figure it could be a few things for my own issues, which could be similar to yours:
1. Toro JB roms just have radio issues. (Seems like more people would be clamoring on this forum though if that were true, and I haven't seen any other than you)
2. I have a bad piece of hardware. (Running my stock ICS rom should shake that out.)
3. I live in a verizon dead zone and will experience drops no matter what ROM I use. (Again, stock ICS should shake that out for me.)
4. Gnex has inferior radio hardware, and there is nothing to be done about it. (Doesn't seem likely.)
ALL that to say that, while I don't have an answer for you, I seem to be experiencing similar problems, and I'm trying to figure it out too.
I'll keep you updated as I hone in on a culprit of my problems. (IF I can)
JR

stickerbob said:
I suggest you upgrade to the AOSP version that was released a couple of days ago. I have been running it for about 20 hours with very good results.
http://forum.xda-developers.com/showthread.php?t=1797996
Click to expand...
Click to collapse
You say "the AOSP" version that was released, but what exactly does AOSP mean? I know what it stands for, Android Open Source Project, but every jelly bean rom I've seen (or most) has AOSP in it and I guess I don't grasp it's actual meaning.
The only thing I know for sure is that I want stock stock stockity stock stock! When devs build roms they tend to always have some sort of a bug or two, and I just never feel like they are stable enough. So I want as stock as I can get! Which is why I installed Vicious Stock JB.
I just really don't know though...I know the nexus apparently has radio problems anyway, but...I guess I can just try the latest roms and see what happens. Are there any radios that I can install maybe that would fix this? :\

whozamazinka said:
Soundfx,
I've noticed some strange data problems as well. I've only had my nexus for 3 days. The first thing I did was throw a JB ROM (actually, about 9 of them to try them all out) on the device. (Vicious was one of them) What I noticed was that pretty consistently, about 5-10 minutes after the flash, my phone would go from having 4 bars of LTE to no signal at all. My connection would drop completely. Although I didn't figure this out until the latter flashes, I did remember having connection issues when I tried going to the play store or the internet on all the ROMs. I'd have to switch of LTE, and then I'd start working again. At first I just figured that I'm in some sort of LTE dead zone or something. But it seemed strange that my connection would drop completely and I couldn't get it back for 30-60 seconds.
SO, this morning I took my device back to stock. Unrooted ICS from Verizon. And although I wasn't at home for more than a minute to do testing, it appears that my connection problems have gone away. So I'm wondering if it is a radio issue for JB roms. All that to say that I don't think your problem is just the vicious rom. If you wouldn't mind, I'd suggest you trying another ROM and seeing if you have the same issues.
I figure it could be a few things for my own issues, which could be similar to yours:
1. Toro JB roms just have radio issues. (Seems like more people would be clamoring on this forum though if that were true, and I haven't seen any other than you)
2. I have a bad piece of hardware. (Running my stock ICS rom should shake that out.)
3. I live in a verizon dead zone and will experience drops no matter what ROM I use. (Again, stock ICS should shake that out for me.)
4. Gnex has inferior radio hardware, and there is nothing to be done about it. (Doesn't seem likely.)
ALL that to say that, while I don't have an answer for you, I seem to be experiencing similar problems, and I'm trying to figure it out too.
I'll keep you updated as I hone in on a culprit of my problems. (IF I can)
JR
Click to expand...
Click to collapse
Thank you kindly sir, and I will give a few other roms a shot just to see what I can find out and report back!

I tried flashing a few different roms; Liquid TORO Alpha 6, Vicious CM10 Toro, and Vicious JB 4.1.1 v1. All three of them as soon as the phone booted up showed the exact same poor 3G signal quality in the back sleeper while I'm in a dark maroon 4G area. Although I don't think I did a proper rom installation. They roms definitely installed, but it upgraded and installed over what I had...which I didn't realize it would do at all. I'll try doing it properly rom installation with a JB toro rom and then I'm going back to stock ICS to see what it looks like. I'm actually, right now, back at the truck stop that I originally noticed this problem. I'll post back.

I tried flashing back to stock 4.0.4 ICS build with the most recent radios, then I tried EK06 EK05 radios. It was the same across the board. No matter what rom/radios i use, the signal quality was the same. I lost service completely inside the building and in the sleeper it drops to 3G with incredibly poor signal quality :\ -100 dBm -120 dBm I'm going to try and get a new SIM card. if that doesn't solve it...then I guess it's time to look for a new phone :\

It seems like the developers are in a holding pattern until new radios are leaked. If it's that bad, there's no real harm in sticking w/ ICS until we get radios. Some really sweet things have been done by the community in the meantime.
Sent from my Xoom using xda premium

well I already had vicious 4.1 installed with my apps and all that stuff and it's the same across the board. So I'll be sticking with this until something pops up I guess :\ I'm still definitely going to check about getting a new SIM card; it's the only option, short of another phone, that I can try at this poing. -shrugs- :\

[Q] Poor Battery Life on CM10.1 (RC2)

I have been using CM10 for awhile and usually find it to be great. However recently I have noticed my phone doesn't seem to last a full day anymore and this is minimal screen time. I updated to CM10.1 (RC2) when it was released, I'm not sure if that contributed or if there's something else I'm missing. I have found the best performance by disabling LTE and using WiFi whenever possible. Still though it lasts 9 hours with about 1h30m screen time. If I use it anymore the battery may only last 5 or 6 hours, and this is just using it for occasional web browsing and some texting.
My service provider is Koodo (Telus) and I live in Burnaby BC, so I usually have a pretty good cell signal.
I have attached some screenshots of my battery usage. This was on a day with only light usage and no music or media used; LTE was disabled and WiFi was on.
Any ideas as to what could be causing this, or if this is normal would be appreciated.
Thanks!

smcw said:
I have been using CM10 for awhile and usually find it to be great. However recently I have noticed my phone doesn't seem to last a full day anymore and this is minimal screen time. I updated to CM10.1 (RC2) when it was released, I'm not sure if that contributed or if there's something else I'm missing. I have found the best performance by disabling LTE and using WiFi whenever possible. Still though it lasts 9 hours with about 1h30m screen time. If I use it anymore the battery may only last 5 or 6 hours, and this is just using it for occasional web browsing and some texting.
My service provider is Koodo (Telus) and I live in Burnaby BC, so I usually have a pretty good cell signal.
I have attached some screenshots of my battery usage. This was on a day with only light usage and no music or media used; LTE was disabled and WiFi was on.
Any ideas as to what could be causing this, or if this is normal would be appreciated.
Thanks!
Click to expand...
Click to collapse
Did you update your bootloaders? If so, you probably have the LK4 modem, I'd try flashing the LL1.
Also, you can download BBS (BetterBatteryStats) from here to help narrow down what drains your battery.

It has been known that CM10.1 has been giving poor battery life ever since the Linux 3.4 kernel rebase. I'm not sure if there is a fix, or if the CM guys are working on it at all... It has been 7 days since the last kernel commit for d2.

smcw said:
I have been using CM10 for awhile and usually find it to be great. However recently I have noticed my phone doesn't seem to last a full day anymore and this is minimal screen time. I updated to CM10.1 (RC2) when it was released, I'm not sure if that contributed or if there's something else I'm missing. I have found the best performance by disabling LTE and using WiFi whenever possible. Still though it lasts 9 hours with about 1h30m screen time. If I use it anymore the battery may only last 5 or 6 hours, and this is just using it for occasional web browsing and some texting.
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I can support this, I am getting about the same battery life as you. Ever since updating to RC2 I have noticed that my battery life has diminished. I have a spare samsung battery, and normally I wake up, boot and go to school and use my phone a fair amount for texting, researching, and music. A full charge will usually support this until around 10-12 hours later, then I change batteries in the evening play more music and web browse. I took a screenshot of my battery history a few days ago, you'll notice that the graph increases without the phone ever being connected to a power source.

Has anyone checked their "Cell Standby" to see if there is any time without signal showing?
If you haven't toggled your LTE off, have a look sometime and let me know. If it is showing a percentage of time without signal, go back to your battery life graph and see if there is any RED in your Mobile Network Signal. If you see time without signal but no red in the bar let me know.
I've got some ideas on why battery life isn't great and I'm trying to build a case for it. Guys who frequent locations with poor LTE (4G) signals are who I'm mostly looking to get data from.
Any information that you guys might have would be very helpful to me. Screen captures are welcome. I've uploaded a couple of myself to show what I am talking about.
Cheers.

flexfulton said:
Has anyone checked their "Cell Standby" to see if there is any time without signal showing?
If you haven't toggled your LTE off, have a look sometime and let me know. If it is showing a percentage of time without signal, go back to your battery life graph and see if there is any RED in your Mobile Network Signal. If you see time without signal but no red in the bar let me know.
I've got some ideas on why battery life isn't great and I'm trying to build a case for it. Guys who frequent locations with poor LTE (4G) signals are who I'm mostly looking to get data from.
Any information that you guys might have would be very helpful to me. Screen captures are welcome. I've uploaded a couple of myself to show what I am talking about.
Cheers.
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Click to collapse
Poor signal is one hell of a battery drainer. I would suggest trying different modems to find one that works better in your area.

BWolf56 said:
Poor signal is one hell of a battery drainer. I would suggest trying different modems to find one that works better in your area.
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No no. Modems do not affect this issue at all and with the new phones now a days modems don't play as big of a role as they used to with signal strength. Anyway this issue is bigger than that. CM10.1 isn't reporting 4G low signal strenght correctly. It jumps from -115 at one bar to 0dBm no bars instead of switching over to a 3G signal or showing a value that is accurate like -117dBm.
Flashing back to the M1 release of CM10.1 or even to stock and the handoff from 4G to 3G is seamless. We aren't seeing that anymore with the later released even as early as RC1.
Here is my JIRA report.
https://jira.cyanogenmod.org/browse/CYAN-1209
You can see I've put some work into it. Trust me, this isn't a flash a different modem, change network preferences or anything type of issue. I've tried all that before finally starting to gather some screen captures and information on the way the phone is handling it's network signals.
I've also talked about it extensively in the CM10.1 Nightlies thread in the dev section over the last week or two.
http://forum.xda-developers.com/showthread.php?p=41931891#post41931891
Also my original post was asking for anyone who has seen a time with signal recorded under cell standby BUT NOT showing any red in the mobile network status graph. Different than just no signal at all and red showing meaning you have no connection to the carrier at all.

flexfulton said:
No no. Modems do not affect this issue at all and with the new phones now a days modems don't play as big of a role as they used to with signal strength. Anyway this issue is bigger than that. CM10.1 isn't reporting 4G low signal strenght correctly. It jumps from -115 at one bar to 0dBm no bars instead of switching over to a 3G signal or showing a value that is accurate like -117dBm.
Flashing back to the M1 release of CM10.1 or even to stock and the handoff from 4G to 3G is seamless. We aren't seeing that anymore with the later released even as early as RC1.
Here is my JIRA report.
https://jira.cyanogenmod.org/browse/CYAN-1209
You can see I've put some work into it. Trust me, this isn't a flash a different modem, change network preferences or anything type of issue. I've tried all that before finally starting to gather some screen captures and information on the way the phone is handling it's network signals.
I've also talked about it extensively in the CM10.1 Nightlies thread in the dev section over the last week or two.
http://forum.xda-developers.com/showthread.php?p=41931891#post41931891
Also my original post was asking for anyone who has seen a time with signal recorded under cell standby BUT NOT showing any red in the mobile network status graph. Different than just no signal at all and red showing meaning you have no connection to the carrier at all.
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Well then, I stand corrected. Great work, thanks!

flexfulton said:
Has anyone checked their "Cell Standby" to see if there is any time without signal showing?
If you haven't toggled your LTE off, have a look sometime and let me know. If it is showing a percentage of time without signal, go back to your battery life graph and see if there is any RED in your Mobile Network Signal. If you see time without signal but no red in the bar let me know.
I've got some ideas on why battery life isn't great and I'm trying to build a case for it. Guys who frequent locations with poor LTE (4G) signals are who I'm mostly looking to get data from.
Any information that you guys might have would be very helpful to me. Screen captures are welcome. I've uploaded a couple of myself to show what I am talking about.
Cheers.
Click to expand...
Click to collapse
I can probably come up with some data, when I'm at work I generally get a low signal, I never toggle LTE, though I live in a town of ~8000 people, far from major centres. I believe we have HSPA+, but I'm generally connected to 3G. Right now, I've had normal battery life, (no increasing), and 0% time without signal, should I ever have <0% I'll message you some data. Thanks for your work!

I can confirm that I'm having this issue as well. I live in a 4G city (Boston), but my high school has practically no 4G reception. I noticed that unless airplane mode is enabled in the school, I have a battery drain of about ~1 per 5 minutes. The battery stats shows certain red areas when the signal is close to 0.
I'm running the latest nightly (5/29), but I'm flashing back to the M1 ROM until this is fixed. If I encounter any issues with this ROM, I'm probably going to flash back to stock.
Hopefully the devs can get on this when they have time.

Piegoodman said:
I can confirm that I'm having this issue as well. I live in a 4G city (Boston), but my high school has practically no 4G reception. I noticed that unless airplane mode is enabled in the school, I have a battery drain of about ~1 per 5 minutes. The battery stats shows certain red areas when the signal is close to 0.
I'm running the latest nightly (5/29), but I'm flashing back to the M1 ROM until this is fixed. If I encounter any issues with this ROM, I'm probably going to flash back to stock.
Hopefully the devs can get on this when they have time.
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Battery life has actually improved quite a bit since rc2, but when I'm at school, where the signal is bad (most of the time I get "emergency calls only"), I see faster than usual battery drain as well. I think that this is normal though, because even my old dumbphone drained battery quickly when there was no signal.
Sent from my SGH-T999 using Tapatalk 4 Beta

klin1344 said:
Battery life has actually improved quite a bit since rc2, but when I'm at school, where the signal is bad (most of the time I get "emergency calls only"), I see faster than usual battery drain as well. I think that this is normal though, because even my old dumbphone drained battery quickly when there was no signal.
Sent from my SGH-T999 using Tapatalk 4 Beta
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Emergency Calls Only and Red in the mobile network history aren't what I'm referring too with my issue.
Those two things would indicate you phone had no cell signal at all to your carrier. I'm talking about being on such a poor 4G signal but still being connected to the Roger's network. It's hard to explain.
Anyway I appreciate your input.
There has been a lot of discussion on this in the CM10 Nightlies thread in the dev section if anyone is interested in reading or check out the JIRA report linked on the first page of this thread.

flexfulton said:
Emergency Calls Only and Red in the mobile network history aren't what I'm referring too with my issue.
Those two things would indicate you phone had no cell signal at all to your carrier. I'm talking about being on such a poor 4G signal but still being connected to the Roger's network. It's hard to explain.
Anyway I appreciate your input.
There has been a lot of discussion on this in the CM10 Nightlies thread in the dev section if anyone is interested in reading or check out the JIRA report linked on the first page of this thread.
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Click to collapse
I'm still connected to the AT&T network, but it's a very weak signal when I'm at school.
Just flashed back to stock, and the draining issue disappeared. I guess there's still some issue regarding cell signal that's draining the battery.

I've got the same issue, I thought it was just me. I'm on Rogers
I even lose battery (about 1% every 30 minutes) while plugged in and charging, if I'm listening to music, and checking my phone once every half hour for texts or emails.
The other day at the gym while listening to music and using 1 note taking app, it went from 95% to 15%. When I checked, it said the phone was active for 1 hour and 5 minutes even though I never used the phone.
I'm going to install that bettery battery status app now.