[Galaxy S II Q&A, Help & Troubleshooting] FeelTheBuzz:
Hi guys! I'm new around here, I've been lurking the forums for the past year or 2.

I originally had a

i9000.

Had it rooted, flashed & running

4.2.2 Hellybean

, it was a dream, easiest android phone i've

ever

dealt with.

Today, I bring you a device that is so mind boggling and mysterious, it's ridiculous. Before you ask, yes I've

searched and searched countless hours on end & sleepless nights.

Trying to work out how to

PERMANENTLY

fix this device.

Straight up, I'm going to tell you what I've done, what I've tried, where the phone came from, model of the phone & all the useless stuff.

OKAY. Go.

I got the

Samsung Galaxy S2 (i9100T)

off a friend recently, about a month or two back. He didn't have a back cover for it, and the camera was all smashed up

(back camera)

. It was running on

4.1.2 Vodaphone Stock

DVLSH

. It had a few issues when the phone got to me.

I wasn't sure if the phones battery was depleted, but I had to muck around with the phone for a couple of hours just to get the damned thing to turn on.

When I had got the phone to turn on, I kept getting

"Warning! Battery Disconnected!"

messages, this was frustrating. I eventually let the phone fully charged before I mucked around with it and ignored the warning.

When it was fully charged, I went straight to rooting it. I first rooted it by flashing

CF-Root

and then flashed a custom rom.

(Xylon AOKP. 4.2.2)

From here on, the phone started to

randomly restart, drop signal, lose battery after random restarts, get semi boot loops.

So I flashed a different stock

(XWPL8)

and

got rid

of the Samsung Galaxy SII i9100

T

boot logo and it was changed to

Samsung Galaxy SII i9100.

After this, I then again rooted the phone but this time a different method and used

Siyah kernel

and flashed

Carbon rom 4.2.2.

I still encountered the same problem as

Xylon 4.2.2.

So I kept reverting back to stock, re-rooting & trying again.

I've tried countless methods.

POSSIBLE HARDBRICK RECOVERY DON'T TAKE MY WORD THOUGH:

I've even managed to HardBrick the device (yes I mean hardbrick, i didn't even JTAG to bring it back... I flashed

Dorimax Kernel

at some point and it hardbricked it to all ****.) I spent a few days trying to unbrick it when finally I just plugged it into the charged and forced it to internally turn on (i believe) and let the battery deplete (the phone was hot even when i unplugged it. So I let the battery drain.) Yes I even battery pulled and tried to reboot it to see if I could boot recovery or download or the rom even before I tried any of this! (absolutely nothing.)

I took out my SIM card after a full day of letting it drain (just to be sure) plugged it in, took out the battery while the charger was plugged in, put the battery back in, unplugged the charger while holding power, and plugged it back in and I got the charging logo booted into download mode after 80% charge and flashed stock again.

Now the problem(s) with the phone:

SEMI-BOOTLOOPS:

Every time i've rooted the phone and even flashed different roms just to make sure, it does a "semi boot-loop" I've searched everywhere for people with the same problem but found nothing on it.

What it does, is it turns on (boots the samsung logo.) turns off, turns back on, turns off, turns back on etc and then after about 2-8 times of doing is usually it boots to the ROM and the phone works for awhile.

RANDOM REBOOTS:

I don't get these much anymore since I found a solution where someone had just folded up a receipt and pushed the battery up against the prongs because it had about .5mm movement off the prongs. This fixed most of the random reboots and don't see many anymore.

SLEEP OF DEATH!?!?!? OR JUST A BLACK SCREEN THAT DOESN'T TURN BACK ON!?:

This one I'm not 100% sure what it is, I read it's the S.O.D (Sleep of Death). Which is common on 4.0.4 and was apparently fixed in later Android versions. But sometimes, when I lock my phone, or my phone goes to sleep, the screen stays black even after I press the home button or the power button, at first I thought just restart it by battery pull or holding down power like everyone says, yeah it works, my phone boots up and does a semi-bootloop and goes back on eventually, but one day I left it on in the mysterious S.O.D. and waited 5-10 mins pressed the power button and it unlocked... This one really has me baffled and it does it a LOT.

REALLY BRIGHT SCREEN AFTER REBOOT SOMETIMES!:

Okay, so sometimes when the phone finally turns on, the screen is really bright, like the brightness is still on half, but it's a lot more noticeable on how much brighter it is, it's nearly like a white.

It's really really BRIGHT. Phone shouldn't be able to look/get that bright. After a reboot though it goes away and goes back to normal but this leads me to believe something to do with the battery just a hunch.

RANDOM FREEZES!??!?:

Sometimes the phone will just randomly freeze, I can be doing something and it'll just freeze, it won't turn off, I still get picture on the screen but it's frozen and I can't do anything until I either battery pull or reboot it by holding down the power button.

Before anyone asks, yes, I Factory Reset from recovery, Wipe Cache & Dalvik Cache before, I flash a new rom etc.

- My GApps matches with my Android versions each time.

- The ROMs I have flashed are compatible with my phone.

- And I've made sure everything I have done is completely compatible with my phone and android version.

What I think!:

SEMI BOOT-LOOPS:

This one, I don't think much of, it's got me baffled. It could be something to do with the Boot-Loader, could be something to do with a bad flash

(but I've even tried double flashing a single rom.)

the eMMC could be damaged in a certain way that it causes these self proclaimed "semi boot-loops"

RANDOM REBOOTS:

This one, I've pretty much fixed with the help of lurking the internet over and over for hours, so this indicates a battery problem, will be replacing it this week.

(Yes I'm aware that this battery problem could be causing everything else to play up and that it could all be due to the battery but can we leave the battery out of this just for now so I have more options on how to fix it.)

SLEEP OF DEATH!?!?!? OR JUST A BLACK SCREEN THAT DOESN'T TURN BACK ON!?:

I believe that this could be due to either a high load on the CPU (maybe not so much high but a really low load that it goes into a state of nothing for awhile.) It drops into a mode where it's turned off (something bigger than deep-idle.)

REALLY BRIGHT SCREEN AFTER REBOOT SOMETIMES!:

I

haven't changed voltages

or

messed with any voltages on my phone,

but I believe that it does indeed have something to do with the CPU & GPU voltages or even the BATTERY Voltages either undervolting or being to high.

RANDOM FREEZES!??!?:

I think this one is something to do with my phone not liking the voltages stock set to it.

I read that somewhere

Freezing

the

System Alarm Clock

can fix the random reboots, so I've done that and also pushed the battery up with a bit of receipt so it touches the prongs completely.

Anyway, right now, the phone is on

Stock Kernel with CWM Recovery6, with PacMan's 4.3.1 Nightly release on XWLP8 Baseband

and it still does this all.

I know i'm asking for a lot of help and I'm probably going to get yelled at by Devs or forum mods or some body because I've done something wrong.

But if it doesn't belong here, move it please.

IT TRULY IS A PHONE FROM HELL.

-Thanks, Just another man who wants to fix silly problems for fun.