Database Users

had lite'ning 1.4, updated to 6.1, now wifi issues

ok basically i bought the phone second hand with lite'ning 1.4 on it and the wifi worked perfectly ok all the time. Since it was very old i updated it to 6.1. ever since then I have had issues with the wifi. it will connect perfectly fine to the router but i have no connectivity from it, nothing will get any net access at all. This is also not 100% of the time, its MOST of the time but not all, i do have moments where it does work fine. very very odd.
I have since tried updating the kernel to ninpho 2.1.3 from the 2.0.5 that comes with lite'ning 6.1, but that made no difference.
Someone suggested i try a wifi fix app from the market so i downloaded "FXR wifi fix and rescue" and ran that. It ran ok, wiped all my wifi settings and i restarted, but it has not solved the problem at all.
i find it very very odd since if it was a problem with the kernel OR the rom then everyone would surely have exactly the same problem. I know some people report wifi issues but most dont seem to.
anyone have any other ideas?

The odd thing is that it worked before the update. That means that it will most likely be software related.
You could try flashing something totally different like MIUI or CM. They provide kernels too, so this might resolve it, if your kernel and rom don't "like each other". This usually shouldn't happen, but updates breaking wifi shouldn't too. So it might be worth a try.
Sent from my GT-I9100 using XDA App

if i went to something completely different i assume i would have to factory reset the phone to wipe it first? (or factory reset it AFTER installing the new rom?)
was trying to avoid wiping it as i dont want to spend endless hours setting up everything again. i have backed it up with the free titanium but id still like to not have to find out whether the restore actually puts everything back properly
its very odd as its not completely broken, sometimes it does actually work, and it always connects to the router itself without any problem.

Probably wrong modem for you, flash another one. You can find modems in the developement section.

ok thanks I will have a look at that. It is currently on XXKH3 which is what came with lite'ning 6.1. i am confused though, all SGS2 hardware is identical so if this modem in 6.1 is causing this issue, wouldnt it affect every sgs2 that uses that modem?
I found the "shipped modem collection" post in the original development thread so have asked in there which modem i should try.
ok apparently i should try XXKI3. for o2 UK provider.
although i have now read that wifi is not managed by modem but by kernel only. if this is true then modem will not help me

Well, if the wifi is not managed by the modem, try what I proposed you earlier. The simplest would be to flash CM. Make a backup of your current rom, then do a full wipe and install CM.
As for your data:
1. Titanium backup restores your apps with their data (if you wish). That means that, for example, your games will keep their saves, other apps their settings and so on.
2. Assuming that you have a google-account, you don't have to worry about your contacts, calender,... Just sync it before you flash.
3. The backup you make in CWM will backup everything in case CM doesn't work for you.
In case it does work and you'll want to keep it, the other two other parts of your backup will minimize the remaining work. Note that you shouldn't restore "standard"-apps like the media-player or the SMS-app if titanium backup tells you that the app is not currently installed on your fresh CM. This means that CM uses it's own media player or SMS app. It could lead into problems to mix TouchWiz apps with CM.
A side-note:
Don't use the "stable" version. It had more bugs than expected and they made it a RC again. However, it is still in the stable folder. Get the latest nightly.
Sent from my GT-I9100 using XDA App

yep i think it is kernel. just noticed that 1.4 had cf-root, 6.1 had ninph 2.0.5 and i then tried ninph 2.1.3 and both ninph's have had the issue. i just tried speedmod k2-13 as i already had that downloaded and so far the wifi has been ok so hopefully thats it fixed. i guess it was something to do with ninph (i am thinking that because i have it set to sleep the wifi when the screen is off that somehow ninph is not handling this properly).
possibly one good thing to come of it all, ive updated the modem to KI3 which is supposedly the best one for o2 UK so i may even save more battery and speedmod is meant to be really good for battery too. I still have lite'ning on it at the moment.
i might have a look at CM anyway but i do kinda like lite'ning (although i havent actually used anything else since the phone came with it!)
also need to look at wakelocks to see if i can save some more, although not sure how i go about 'fixing' them at the moment

The choice between CM, MIUI and the stock mods is the choice between three different UI's.
I've had all three of them for some time. As you got CWM, you can just create a backup and do a sightseeing tour through the world of custom roms. Believe me, it's absolutely worth it. To get an idea of the main differences, I've written a short overview for you:
Stock mods use Samsung's TouchWiz. The default user interface that you get when buying a Samsung Android phone. So it mostly looks and "feels" the same and you can't do much about it.
CyanogenMod gives you the pure Android user interface. It's the closest to the Nexus phones by google, but gives you some extras. It is much more customizable than stock roms. It's sleek and fast.
MIUI is a whole different story. They're "Redefining Android". I think calling MIUI an "Android custom rom" is an understatement. It's an entire OS. The result of putting the best from iOS and Android into one powerful OS. It adds tons of useful(!) features. If you've ever used Windows Phone 7 or an iPhone, you know what a big step forwards Android is when it comes to features. Switching from Android to MIUI is just like that. There is just so much more. It is BY FAR the most customizable Android you can get.
Wow. If I look at how long the texts are, I see that I'm pretty biased. :O
Well maybe because I've switched so often between them. The stock roms had no chance, because after I used one of the others I found out that TouchWiz doesn't cut it anymore. I hate how "iPhone-ish" MIUI is, but if I flash CyanogenMod I just miss so much. Giving you a list of what MIUI adds would be another long post of this length.
Sent from my GT-I9100 using XDA App

cool thanks will have a look at MIUI at some point.
spoke too soon earlier, the wifi is maybe slightly better on this speedmod kernel BUT when i wake the phone from sleep, it takes about 30 seconds before i can connect to the net with anything. the phone connects to the wifi straight away, but i have no connectivity for a good 30 seconds and then it starts working. (its not the router, i am getting a connection and an IP pretty much as soon as i wake the phone). also the 30 seconds or so only STARTS once i try to connect to something. if i wake the phone and do something that does not want net access for a few mins and THEN try to get on the net via wifi (which shows as connected the entire time) then again i have to wait about 30 seconds from when it first tries to connect before it will start working.

ok slightly confused again.
I have lite'ning 6.1, speedmod k2-13 kernel and XXKI3 modem. I am trying to get cwm installed so i can make a full backup image of the entire phone while i try to sort out the wifi issues. i downloaded rom manager from market, and selected the firstion option in the app 'flash clockworkmod recovery'. it brings up a menu saying 'confirm phone model' with AT&T galaxy S2, a coulpe of i9000s and a plain "Samsung Galaxy S2" which is the one i selected. it downloads something and says successfully downloaded clockwork mod recovery.
i then choose reboot into recovery. when rebooting it attemps to install something but then says "failed to verify whole-file signature" and aborts. so im just stuck with the standard recovery instead.
so now im confused, have i missed something?

Ehhhhm, you don't need to do it.
Have a look at the features of the speed-mod-kernel:
Current features:
Root and CWM:
- Automatically installs root (su)
- CWM 4.0.1.5 recovery
It already installs it right away.
Just in case you messed something up. You should flash the kernel again.
Besides that you don't need the RomManager at all. Just shut your phone down and boot into the recovery with the key-combo. Create and restore backups from there.
Sent from my GT-I9100 using XDA App

[Q] Unable to connect to mobile data

I finally got superuser working by flashing Echoe Illusion, the full touch-wiz version with Android 4.3. At first it seemed like I had everything working but the next day when I left the house (no longer connected to home wifi) I quickly realized it was refusing to connect to mobile data. I also cannot send text messages, and likewise I can assume I can't get them either. I have tried flashing the nightly CM11 build and 3G connected although LTE did not. I wasn't in an area where I expected reliable LTE anyway so that's not even an issue at this point because I'd very much like to use this Echoe Illusion rom, or another Touch-wiz based one. I just can't go downloading a bunch of them because I have a severe restriction on data usage and have already downloaded Echoe Illusion AND multiple other things. If it matters, my baseband ends in MJA.
I have also attempted to flash different modems with Odin, although all of them failed completely to flash at all and at this point I have to honestly admit I don't know what I'm doing. This is most definitely not my first time rooting...I'm just used to HTC phones, the Evos in particular. Thanks in advance if anyone can help or provide useful tips!
oh and P.S. I can't go back to the stock firmware because I must have flashed an incorrect kernel, and it borked the phone. I only got it working again by flashing a separate rom (Echoe Illusion) and have since flashed other kernels with no ill effect. I had a nandroid backup of the stock rom before I borked it, but every time I try restoring it, it stops at the yellow Sprint screen and won't boot.

[Q] Help me pls, no phone signal

Ok, I was running PA 4 Beta3 but was having problems with the screen delay so thought I would completly wipe my phone, fresh install PA and install the mini Gapps (I had prev installed the stock but didnt want all the apps)
Here is where it started to go wrong, Phone would not start ptopery, would get past animation screen but that was it, would then just crash with small date in corner.
Wiped and flashed just the Rom and this also failed.
Wiped and installed 3.99 and this seem to work but then the wizard crashed and I had to power down.
Booted back up into recovery and dirty flashed Beta 3 again and this seemed ok. Flashed Stock Gapps and rebooted.
All apps have installed again, titanium back has been run but I still have no network what so ever.,
If i go into settings, more, vpn, mobile networks I get 'unfortunately settings has stopped'.
I have dirty flashed again but still have same problem.
I cant do a complete wipe and install again as need to get out of the office, however with the prev problems I had I am weary about doing so.
Can anyone shed any light on any of the issues i had at all?

foxguard said:
Ok, I was running PA 4 Beta3 but was having problems with the screen delay so thought I would completly wipe my phone, fresh install PA and install the mini Gapps (I had prev installed the stock but didnt want all the apps)
Here is where it started to go wrong, Phone would not start ptopery, would get past animation screen but that was it, would then just crash with small date in corner.
Wiped and flashed just the Rom and this also failed.
Wiped and installed 3.99 and this seem to work but then the wizard crashed and I had to power down.
Booted back up into recovery and dirty flashed Beta 3 again and this seemed ok. Flashed Stock Gapps and rebooted.
All apps have installed again, titanium back has been run but I still have no network what so ever.,
If i go into settings, more, vpn, mobile networks I get 'unfortunately settings has stopped'.
I have dirty flashed again but still have same problem.
I cant do a complete wipe and install again as need to get out of the office, however with the prev problems I had I am weary about doing so.
Can anyone shed any light on any of the issues i had at all?
Click to expand...
Click to collapse
Sounds like a radio issue. If you are running 3.99, you need the radio for 4.3 which I do believe 3.99 is based on. You need the radio for KitKat when running the new betas.
Sent with my Nexus® 10 minus 3

This is the easiest way to flash a new radio http://forum.xda-developers.com/showthread.php?t=2607221
If you went up to a 4.4 based rom and it changed your radio to .97 or .98 then you'll need to flash back to a .84 or before.
to go back to 4.3.

I think I basically said that. Sometimes I believe in not holding hands and let the guy/gal do some of the, legwork.
Sent with my Nexus® 10 minus 3

Thank you every one. I have reverted back to my recovery and all is well but I don't understand why when I flash the ROM ad gapps it happens. My recovery is the same ROM and gapps. No idea.
Oh well stuck with the screen delay for now!
Sent from my Nexus 4 using Tapatalk

mrhiab said:
This is the easiest way to flash a new radio http://forum.xda-developers.com/showthread.php?t=2607221
If you went up to a 4.4 based rom and it changed your radio to .97 or .98 then you'll need to flash back to a .84 or before.
to go back to 4.3.
Click to expand...
Click to collapse
Hi mate, thanks for this. I have reflashed my phone again and still have the same problem. My baseband is showing as 84 though s that is correct?
EDIT, dont worry a reboot has fixed this issue. Odd.
Thanks again though.

foxguard said:
Hi mate, thanks for this. I have reflashed my phone again and still have the same problem. My baseband is showing as 84 though s that is correct?
EDIT, dont worry a reboot has fixed this issue. Odd.
Thanks again though.
Click to expand...
Click to collapse
Ohh you are having issues with ur network !! Seen people completely losing their Imei during flashing !! Not to scare you but its better to get the imei files backed up !!
Check my post on the below mentioned link
http://forum.xda-developers.com/showpost.php?p=49753344&postcount=11
Hit the thanks button if you find my post useful

!!!Stop SAMSUNG GALAXY S3 FREEZING Problems!!!

Well, here is my story...
My cell phone is a Samsung Galaxy S3 mod. GT-I9300. Locked for Digitel (Venezuela mobile carrier). Android Stock Rom version: 4.1.2.
Preamble:
I bought this cellular a year ago, and it worked flawlessly almost for 12 months straight. I haven't experienced any single freezing or rebooting problem. I downloaded KIES and the program detected that a new version of Android was available for downloading for my phone. Bump! Error. I should have backed up my EFS first before doing the upgrading. BACKUP YOURS, IMPORTANT!)
NOTE: Backup your personal data as well since any ROM installation will remove for sure your personal data and info.
After upgrading and a few days later, my cellphone started to act somewhat funny. I started to got some freezing. To be specifically, my phone started to freeze, the screen just froze and nothing happened when I touched the screen, pressed any button. The only thing worked was to restart the cell (by pressing and holding the POWER button or by removing the batteries). Anyway, the freaking freezing problems continue occurring.
By the way, the warranty expired just a few days ago...
Since I couldn't do anything to stop the freezing problems, I decided to root the cell and install a new version of Android not official for Samsung and test its performance. But before that, I factory reset my cellphone, but it didn't work at all.
I tested several Android version I could find on internet: cm-11-20140....-i9300.zip, specifically, the SNAPSHOT, STABLE, NIGHTLY version. None of that worked, I also tested the cm-10-20... without luck. In fact, the freezing problems with those versions got worse and worse.
Taking the above in consideration, I decided to re-install the stock rom version (ver. 4.1.0) the one that was shipped with my phone when I bought it. You can find these version for any carrier in the world at: sammobile
I flashed and I used it for almost a day or so. During that period of time, I could feel that the freezing issues were gone, not even a freezing event. But unfortunately, I couldn't connect to any Mobile Network!!, so I had just bricked my cell phone !!! I took it to the cell carrier company (DIGITEL) and they could not do anything since my warranty already expired. WTF ! I was alone with my own problem now to sort it out.
SOLUTION !!
By no means I mean this is a cure but I have just stopped getting the hellish freezing and rebooting problems, and I just wanna share my experience with you so maybe I could help you to get rid of this annoying issues for the time being.
Picking up where I was left off, all I had was my bricked phone and a working ROM: ver. 4.1.2, So I decided to to reinstall this version back on my phone and see if it connected to the mobile carrier.
I reinstalled it and of course, after erasing cache partitions and making a factory reset. The procedures to install any ROM on your cellphone you can find it on internet (for instance, youtube may help a lot).
After I installed the version 4.1.2. my cellphone could connect to the mobile carrier once again... phewww!! But the freezing problems continued to appear in the fuc# phone. Well, now the only option I had to test thoroughly my cell was to install any application one after another but testing if the application was the culprit for the freezing issue.
But right after installing the stock Rom, I got a error message when my phone run to the first screen (Home Screen): TOUCHWIZ stopped responding... it lit my LIGHT BULB! I searched the web for the TOUCHWIZ and found out reports regarding many problems with Touchwiz.
Holy craps! The TOUCHWIZ is a BUGGY APPLICATION that comes with the STOCK ROM developed by SAMSUNG.
My friends there is no way to UNINSTALL that application but to use another LAUNCHER. I fired up and decided to download KIT KAT Launcher. Well, I downloaded the launcher and when you first run this application a windows pops up so you can decide what launcher the cellphone may use and the time to use it. I select ALWAYS I press the HOME button, the launcher to use is KIT KAT.
In addition to that I disable various stuffs, follows (you have to go through the setting app):
Disable Touch wiz (delete CACHE, and FORCE STOP)
Disable GPS
Disable Multi Windows
Disable Swipe Lock ( I found my cellphone freezes a lot while this is on)
I don't use a lot of widgets... but only one: The Clock and Alarm widget.
So far (it has passed 5 days straight without freezing). My phone froze on me while I was downloading something (maybe the phone was updating an app) and at the same time I was texting someone. I am suspicious that there is something to do with the downloading system too and the phone that could trigger a freeze.
Anyway, if you have experienced the freezing issue on your Galaxy S3 just like me, then try what I just outlined and give it a test. But do not download a bunch of program at the same time, just pick one by one, and allow some time to test your application and check if your phone is stable before continue with the next app to download and so forth. I have downloaded so far: whatsapp, BBM, sudoku and other games.
Hope you can get rid of the freezing problems just the way I did, any question feel free to ask.
I will continue posting any advance with my phone.
FROYCARD
PS: excuse my standard English.

Flashing a custom rom would help with the freezing issues too!
Try temasek's 4.4 rom its a lot more smooth than ur stock ull feel u have a new phone
You also lost ur carrier signal because ur efs partition was read only or something so backup ur efs before flashing the rom

kariiim said:
Flashing a custom rom would help with the freezing issues too!
Try temasek's 4.4 rom its a lot more smooth than ur stock ull feel u have a new phone
You also lost ur carrier signal because ur efs partition was read only or something so backup ur efs before flashing the rom
Click to expand...
Click to collapse
Nope,, it didn't work with my cellphone. I already tested it. As a matter of fact, I can name you all the ROM I flashed to my cellphone:
cm-11-20131115-UNOFFICIAL-i9300-V2
cm-11-20140104-SNAPSHOT-M2-i9300
cm-11-20140117-UNOFFICIAL-temasek-i9300-V36
cm-11-20140125-NIGHTLY-i9300
cm-10.2.0-i9300
None of the above rom I used stopped the freezing issue, that's why I needed to return to stock rom, and since then I am using it without experiencing any laggy or freezing.
Thanks anyway. :good:

Isnt it possible to create a rom with all of Samsungs bloat ripped off (TouchWiz included) and replaced with stock apps?
The problem is that non stock kernel roms use up a lot more battery than the stock one...

what?
i havent got this

Dude, you seem like a total beginner at this. You might want to start by trying a proper wipe, install a rom like Temasek and install a kernel like Boeffla.
Touchwiz is not the problem for your freezing. Get a custom kernel on there and try undervolting to lower the temp your phone. It may be too hot and may lock up.
You don't have to stick to roms available from your carrier either. You might just want to try any recent 4.3 rom from Sammy.

jinosong said:
Dude, you seem like a total beginner at this. You might want to start by trying a proper wipe, install a rom like Temasek and install a kernel like Boeffla.
Touchwiz is not the problem for your freezing. Get a custom kernel on there and try undervolting to lower the temp your phone. It may be too hot and may lock up.
You don't have to stick to roms available from your carrier either. You might just want to try any recent 4.3 rom from Sammy.
Click to expand...
Click to collapse
Yeah,,, you may be right I am a newbie... but since I stopped using TOUCHWIZ, I have experienced fewer a fewer lock-ups. I dunno what it is happening with my phone, but that is a fact. I am using KITKAT launcher.
The current stock ROM I am using is: 4.1.2 .... (I9300UBEMH2)
I am not familiar with undervolting to lower my phone's temp... maybe you can guide me about using it, or I could search the web for it.
UPDATE: I installed TWITTER Apps yesterday and each time I used it, it froze my phone for 12 min approx. Any suggestion?

Read the freezing thread sticky .
Delete this non working fix as well .

JJEgan said:
Read the freezing thread sticky .
Delete this non working fix as well .
Click to expand...
Click to collapse
Why should I? Are you a moderator of this forum?

Well I just want to update my post.
Yesterday I just wanted to continue figuring this freezing problem out. Since I published my experiences about freezing until yesterday the problem appears to have reduced significantly. I was using stock ROM ver. 4.1.2 flashed with KIES.
But I wanted to continue testing other ROM's. I tried to install a ROM named SAMMY'S ROM developed by guy named JustArchi (that I found in this forum). However I could not install it on my phone (SGS3 - GT-I9300) since it gave me some errors when I tried to install: ERROR STATUS 7
A margin note: This techie or nerdie called JustArchi gave me the boot from his thread for trying to seek help on this error.. so I trashed this SAMMY'S ROM and move on with another solution.
Whatever, I downloaded another official stock Rom ver. 4.3, released by SAMSUNG, intended for IRELAND - I am not from Ireland, but Venezuela (I founded it at SAMMOBILE under the top 10 latest firmware just released). By using ODIN, I flashed my phone, and to tell the truth, my phone feels differently. I haven't experimented any sluggish or lagging, not even a freezing so far (knocking on wood).
For precaution, I am installing one app at the time, and giving it time to see if everything is stable.
Conclusion: to any guys who is getting the annoying freezing, I think you must stick with it until your mobile carrier makes ROM ver. 4.3 available. Otherwise, if you are like me, wanting to work things out for yourself, download any ROM (ver. 4.3 compatible with your phone model) and test it on your phone. Before doing that, you just have to search the Internet for directions to do so, I am not responsible for what you do with your phone. I'll keep updating if another problem arises.
Note: since I am getting some rude comments from senior members who think they are too techie to read newbie's comments, queries, etc. I am not interested in their replies since they are not helping at all, thus I just ignore your lame comments from now on. Just scram.

Dude, you're really not helping anybody here with your information here. I don't know what you think you're sharing. The error 7 pertains to recover error which can be eliminated by installing an alternate recovery version.
I don't care if you're a newbie or not but you are spreading false info.
I'll scram now.

SM-G900F restarts constantly but only when left idle

I have an unlocked Galaxy S5 from "Three" Ireland (3IE) that restarts many times during the day but only when I leave it idle. Either on its own or while charging.
When its not charging at home, the restarts drain the battery very quickly.
Unrooted, latest stock ROM for this carrier (Android 6.0.1 G900FXXS1CQD1_G900F3IE1CPJ3_G900FXXS1CQA3)
I searched the forum and tried the following in this order:
1. Replace the battery
2. reset factory settings (and reinstall everything)
3. Flash stock ROM using ODIN v3.12.3 (same ROM version)
Nothing helped. :crying:
I didn't reset factory settings (again) after flashing stock ROM since I don't think that will make a difference. Any ideas?

kdizzy07 said:
I have an unlocked Galaxy S5 from "Three" Ireland (3IE) that restarts many times during the day but only when I leave it idle. Either on its own or while charging.
When its not charging at home, the restarts drain the battery very quickly.
Unrooted, latest stock ROM for this carrier (Android 6.0.1 G900FXXS1CQD1_G900F3IE1CPJ3_G900FXXS1CQA3)
I searched the forum and tried the following in this order:
1. Replace the battery
2. reset factory settings (and reinstall everything)
3. Flash stock ROM using ODIN v3.12.3 (same ROM version)
Nothing helped. :crying:
I didn't reset factory settings (again) after flashing stock ROM since I don't think that will make a difference. Any ideas?
Click to expand...
Click to collapse
Did you have any custom rom installed before? Try flashing latest bootloader for the phone and checking, if all else fails try a custom rom and see if the problem persists.

Mufrad said:
Did you have any custom rom installed before? Try flashing latest bootloader for the phone and checking, if all else fails try a custom rom and see if the problem persists.
Click to expand...
Click to collapse
No custom ROM while the phone was in my possession. It could have been before I got it (I'm not the original owner) but when I did get it I was on stock and unrooted (at least according to "Root Checker").
Didn't I get the latest bootloader when I flashed the latest stock ROM? I remember seeing the files "boot.img" and "modem.bin" in ODIN.
Also if you have any suggestions for a good custom ROM I'm all ears :angel: (I like bug-free*, speed and battery life. In that order of importance)
* - I know there's no such thing as "bug-free" but you get the idea

kdizzy07 said:
No custom ROM while the phone was in my possession. It could have been before I got it (I'm not the original owner) but when I did get it I was on stock and unrooted (at least according to "Root Checker").
Didn't I get the latest bootloader when I flashed the latest stock ROM? I remember seeing the files "boot.img" and "modem.bin" in ODIN.
Also if you have any suggestions for a good custom ROM I'm all ears :angel: (I like bug-free*, speed and battery life. In that order of importance)
* - I know there's no such thing as "bug-free" but you get the idea
Click to expand...
Click to collapse
Sometimes you have to flash bootloader again separately, specially if it was changed to an later version than the one you are flashing through odin, and I would suggest a custom touchwiz rom which is close to stock but with bloat removed and some speed tweaks maybe for the most bug free experience. But also maybe give stock android roms a try, most bugs should be ironed out.

Mufrad said:
if all else fails try a custom rom and see if the problem persists.
Click to expand...
Click to collapse
OK, last night I tried a couple of things:
1. I flashed Slim6 6.0.1.build.2.1 and twrp-3.2.3-0-klte (with wiping) - didn't help.
2. I took the sim card & sd card out - didn't help.
3. I ran logcat from ADB using USB debugging to see if I could get the error before the restart - While the phone was connected and logcat was running, the phone never restarted. Even when the screen timed out and turned off. (I guess the phone doesn't count this as "idle")
oh, and thanks for all the assistance so far
The fact that it happens on custom ROM leads me to think hardware. The fact that it doesn't happen if I keep the phone "busy" leads me to think software. What should I try next?