Galaxy S4 switching off around 30% since flashing CM - Galaxy S 4 Q&A, Help & Troubleshooting

A few months ago, I flashed a 6.0.1 cyanogenmod rom(by Alberto96) onto my jfltexx(international) S4. Excellent Rom I must say, but since that flashing, my phone had been dying at 30%, (when I switch on the screen if its 30% or below it'd freeze then switch off). Thinking the ROM was the issue, I then reverted back to stock Samsung 5.0.1, but the issue persisted. I'm not a fan of the stock rom and would like to go back to CM or lineage, any idea what could be causing it?
I've eliminated the fact that it's a faulty battery because this is a new battery, and all my other spares that switch off at 30% work just fine on other devices.
Really hope you can help me resolve this.
Regards

Related

[Q] Device getting hot, battery drain when active

HI Guys,
i Updated my Phone via factory image to Android 5.1 all worked well during the update.
I spotted that with the stock 5.1 my phone got hot when active and the battery went down very fast (and by active i mean just doing normal stuff).
So i decided to go to cm12.1, installation also worked well, but had the same problems here.
Then i went back to stock 5.1 but still the same problems, my phone is getting hot and battery life is getting low when i use it.
When not in use its ok, it baerelly uses battery then.
I searched in forum and google also, but couldnt find anything rly helpfull, i think of going back to 5.0.1
TL: DR
Since Update to 5.1 Phones runes hot and the battery is going low very fast when in use.
Does anyone know this issue and has some advice to solve them?
Gretz from Germany

Motherboard problems/Lollipop only

Hello guys,
I'm currently having issues with my phone since I've dropped it in a pond outside, and I guess it's the motherboard that is affected.
I cannot charge my phone (I use a desk changer + another battery), the flash is working only for half a second while taking pictures so I need to manually set the ISO, but those problems are not so important.
The reason I write here is because everytime I flash an official or any other touchwiz based LOLLIPOP OS, the phone is getting through a "plug/unplug". I don't know how to explain, it simply says that it's charging, then after a few seconds it says it's not charging, and so on, WITHOUT having it plugged.
Is there any way to simply delete these instructions from the OS? The phone is working flawlessly otherwise.
These things only happen when using official or touchwiz based LP, the KK ones are working as they should, and it's a bit weird because only with LP I have these problems. Also, if I flash some CM based OS, it's working flawlessly.
Please help.
Thanks in advance.

Various Issues with LG G2 D800 (AT&T)

So I've been having some issues with my LG G2 as of late. I've had this phone since June of 2014, and I love it, however, lately I've been having some peculiar problems popping up.
The biggest issue, I suppose, is this: My phone randomly reboots, a lot, but it's only when I'm away from home (as odd as that sounds), and only when I'm running a custom ROM. I've tried CM11/12, SlimROM and AOSP, all with the same random rebooting issue from seemingly out of nowhere. If I flash to stock, it doesn't happen, but this is the second issue; the battery life on the stock ROM is absolutely horrid for some reason now, and it never was before. Just from letting my phone sit, without touching it, I get ~7 hours of standby time, and with normal usage I get maybe 5 hours, tops. With a custom ROM, I have no issue letting it go 2-3 days without charging it.
I've done a full flash back to stock on multiple occasions, as well as running through the various custom ROMs floating around, and the issues still persist.
Anyone have any ideas?

Everything is running in slow motion on my S4

I've had this issue for months now and I've started countless threads in countless forums attempting to solve it:
my S4 (GT-I9505 jflte) is basically running in "slow motion". What I mean by that is that no matter what I do, about 50% of the time all animations will play back at about half the speed they normally would and any kind of input will be registered with a delay of about half a second. Animations still look smooth at about 60fps and the phone doesn't crash, it's just... slow. Really slow.
I used to think this had to be an issue with Cyanogenmod (was running the Optimized CM12.1 rom from AntaresOne & Alucard), but after trying several different builds and clean flashing countless times, nothing changed. Now I just flashed an entirely different ROM (Resurrection Remix) and although it ran buttery-smooth for the first hour or so, after restoring all my apps it has now started doing the same thing.
The fact that the problem persists even with a completely different ROM leads me to believe it must be something to do with the apps I have installed. But how do I troubleshoot this? I have way too much stuff on my phone to go through deinstalling every single app and making sure it wasn't causing the problem.
I have no idea how to approach this problem. Any help would be greatly appreciated.
EDIT:
I'm not sure if this has been happening before with CM12 or if it just started happening now with Resurrection Remix, but I just noticed that it seems to happen mostly when the device is charging. When I unplug it, 9 times out of 10 the slowness will instantly go away... is that an indication of anything?
EDIT 2
I think I just solved the issue. After discovering that the problem appeared to be caused by the charging, I tried a different charger. My original Samsung charger started having horrible coil whine a few months ago, so I threw it out and started using a generic one I had laying around. Come to think of it now, that must have been when the problem started.
I just found another charger for a Samsung phone and plugged my phone in: everything fine. Switched back to the generic charger: everything slow. So it must have been the charger. Just out of curiosity, is this a known issue? Could some kind of electrical noise from the charger be interfering with the touch screen? Seems almost bizarre that a simple charger would cause a phone to run slow...

Battery going up and down + reboot

Hi,
My wife's gti9505's has an issue with the battery that I cannot seem to fix. One second it's at 75% then all of a sudden it's a 5%, then it goes to 50% and some times it reboots. I don't know if this might be related but she mostly feels this happens when she uses the uber app. She has the latest official android version (5.1..), I've tried installing a new rom with 6.0 but the problem persisted. I've bought her a new battery but the problem persisted. At this point I'm thinking that this MUST be a hardware problem. Any other solutions I may try?
The reboot problem might be a power button issue.

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