Strange reboot issue on the 920 - Nokia Lumia 920

Since I went over to a 4G contract every time I turn on my 920 it keeps rebooting itself until it gets a 4G signal, as soon as it does it stops doing it.
It is an unlocked handset running on the Amber update.
Has anyone else encountered this issue & knows what the solution is? I have already tried the power button + down volume key reset to no effect.

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[Help] Power button issue

I tried to turn the screen off, but it keeps turning back on. I've had this issue for a while and looked it up. Most people said it was a hardware issue, but the thing is...now it will not turn off the screen at all. I know the power button works because I can long press it to get the power menu as well as hold to restart, but not turn off the screen. Also, I can activate the "lock" feature in TWRP as well with the power button. I had this issue on an older rom, so I wiped EVERYTHING and installed revolt, yet I still had this issue and as I was typing this, I got the new issue of it never turning off. I don't know what's causing it. Any ideas? It's been happening for a few days now.
Attempt 2: Now I have the stupid turning off issue. Now, every time I press the power button the opposite happens. It turns on for a second and then turns back off. I'm thinking that this is a hardware issue. Anyone else disagree?
Attempt 3: Back to same issue, turns off and turns right back on in like 2 seconds. Going to call Samsung and see what this is about.
[EDIT]: I should mention, I have the same vibrate issue described in this thread. I'm suspecting a stuck power button. Great. Time to talk AT&T into giving me an early upgrade.
A stuck power button won't allow your phone to boot up completely. So you're probably ok there if you can boot up and type in an app.
You do have an issue though. Something got borked up somewhere. I would try going back to stock completely.
Backup important files, wipe EVERYthing on the phone at least twice. Then using Samsung kies on a PC do an emergency firmware update. Once your update completes perform another factory reset and see how she's working. If you still have a problem then contact Samsung. If no problem, enjoy your phone!
Eh, I tried the wiping everything (internal, not the sd card), but I guess I shall try moving it to stock as well. Do you suggest keeping TWRP or should I install stock kernel, recovery, and do a firmware update? I might also dump my phone in rice to see if maybe some water got in there (doubt it though). Also, I might be screwed if it's otherwise. Been over a year since I bought the note.
Also, are you sure it's not stuck (partially or sometimes maybe)? My phone is constantly rebooting on and off for no reason and sometimes this happens, other times the power button is okay. But when it does reboot, it vibrates a lot. Sometimes it'll just keep vibrating and never reboot like it's turning off and on constantly and I have to press and hold the power button a few times before it starts booting again.
EDIT: I also realize it could be a combination of issues and one of these issues might be a battery one. I do have another battery and I can feel a noticeable bulge so I'll go home, change the roms, battery, and do a firmware update and see how it goes.
Would just like to add that flashing an official firmware through kies did not fix my problem. Furthermore, now I'm getting the invalid sim problem and it keeps asking me to restart. I had this problem before and just recently (a week ago) got a new sim and now it's back. Maybe it's an hardware issue?

Slow wake up when pressing power button

Hi, I am running the Revolution HD 8.0 on my phone and have been quite happy with it untill recently. The problem is, that randomly the phone takes up to a minute to wake up when I press the power button. The screen just stays black and no buttons are responding. After about 30 seconds to one minute the lock screen comes on and everything works just as normal. This happens only a few times per day. Many times the phone wakes up instantly.
I have tried a factory reset of the Revolution HD and removed all user data but it still happens.
I contacted the HTC support but all they tried was a hard reset (power + volume up + volumne down). It didnt help and they told me to send the phone in to have it checked out. Since I have opened the phone a few times I do not expect to get any warranty repairs on it.
Do you have any ideas on what could be causing this and what I can try to fix it or find out more about it?
Thanks. Regards,
krautsalat82
You should try EliteKernel, so far is the most advance and battery ~ performance + temperature balanced kernel. From my opinion...
http://forum.xda-developers.com/showthread.php?t=2012320
Thanks for the reply! I have just flashed the kernel and will give it a try. Keeping my fingers crossed it will fix this issue.
I have to say the situation has improved a lot. However it still happened once since I flashed the EliteKernel. I mean if it happens once a day I could actually live with it but the root of the problem seems still to be there. Any other ideas what I can try and what could cause this? Are there any logs I could read out after it happens?

Phone completely dead after update. Need help

I received an OTA update and during the update process (or after, I was really paying attention to the screen), the phone turned off and won't turn back on. There's no indication of it turning on nor any indication it's alive. It was plugged during the process so it couldn't have died in the middle of it.
I tried searching up ways to fixing the issue but "fixes" don't work like holding the power button + down volume for 3 minutes didn't work. I also tried contacting Motorola and they couldn't really help either. I had the bootloader unlocked but there's no way it could have caused this big of an issue, right?
Anyway, anyone know of a way to fix this problem? I miss the battery life on this thing. I believe the model number is an X1527 (Canada, Wind Mobile ver)
http://forum.xda-developers.com/moto-e-2015/general/danger-hard-brick-t3217358

No signal, poor battery and faulty power button

About a week ago, I had no signal so attempted to restart my phone, yet it failed to boot up again. It now fails to boot via the power button. After a while of searching, I found that I can turn on my Z5c via a combination of the power button and volume up button (hold both until phone vibrates, then release vol up until it vibrates again, then release power). My phone gets nowhere near the battery which it did before, and will die on 12 hours with no use. Also I have still not been able to get my SIM signal working.
Is this a software or hardware issue? Has anyone else had these issues, or know of a fix?
(Running 32.0.A.6.152)
Who is your service provider? I noticed my Z5c has a different APN than my Samsung, and different reception levels.
For the boot issues, use the desktop Assistant to repair the phone.
Sent from my E5823 using Tapatalk

HTC One M7: Power button doesn't work, but only when screen is on?

So about 3 weeks ago, I dropped my HTC so now I have a large crack running down the middle of the screen. However I haven't had any other problems up until last night. The ringtone volume turns itself up without me even touching the phone every now and then and once it does that, the power button stops working. But it does work again once the screen is switched off, meaning I can turn in on but not off. The power button functions fine until the volume button acts up the first time after restart.
I factory reset my phone thinking it may have had something to do with the software but the problem came back within the hour when all the updates started rolling in. Once it did, i booted it into safemode and the problem seemed to stop but I don't know what's causing it. Could it be an actual bug in an update or is the damage to the screen simply too much for the phone itself? Has anyone ever dealt with a problem like this? Any help will be appreciated as I know it's expensive to fix these things and I don't want to go to the shop to get it fixed only for the problem to come back as it's software related.

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