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Sprint TP2 endless reboot loop - keeps restarting itself

I hope someone can help me, I have a Sprint Touch Pro2. Last night it randomly started rebooting itsself, i was not loading a new rom, i was not installed any software, i wasn't doing anything other that texting and IMing people. After i removed the SD Card, there were a few times i got it to load to the unlock screen, but once i got passed that it would say "starting device activation..." or something like that. Then i got it loaded but Touch Flo 3D would not automatically start. So i removed the battery and restarted it again and i went to bed and left it charging, and it kept restart itself again, when i woke up it the phone was dead, and will not turn on. The charging light is on but it will not turn on.

This happenned to me, i ended up having to exchange the phone.

have u tried a hard reset. U can do this by holding power button and call and end keys.
Phone must be off and it will completely erase your data

this sounds like what my phone is doing. is there a fix? i think im sol because i didnt buy it though sprint.

Not Hopeless
This happened to my Sprint TP2 I soft and hard-reset it but it still went back to the reboot loop.
I put it in the tri-boot screen and re-reflashed the stock ROM and all was well.

Same here
The same thing is happening for me right now. Soft-resets aren't helping. It's sporadic, however, sometimes saying it successfully activated and needs to reboot (then going into activation right away), sometimes saying it failed, and sometimes not coming up at all (but I'm pretty sure it's running in the background, even if I hit cancel, because the phone is very warm and the battery drains very quickly).
I took it to Sprint and they confirmed it was already activated. They tried manually activating it, succeeded, and it still kept doing it. However, both them and I were able to place a phone call, text, and visit a website... so basically it was working. But, like I said, this constant nagging of activation was running in the background sucking juice and killing performance. Their diagnosis was "it's acting weird". The main home screen clock has also been stuck at 0:00 ever since this started (though the lock screen clock and clocks in the World Clock screen are correct).
They said I could go to their service shop and do a diagnostic and backup/wipe/restore or they'd replace it under warranty if it still didn't work.
I figured I'd just try the hard reset myself tonight. Will post how that goes. I'm not sure what this "tri-boot" screen is, but I'll do some searching and check that out too.

Can't boot, restarts constantly

Bought a Nexus 5 about 6 months ago USED. It has been amazing. I got the latest OTA a week ago or so, not sure if that has anything to do with current issues.
About 2 days ago started randomly restarting. Today, it shut down and has been in continuous loop restarting. I see "Google" and maybe even the boot dots loading, then it is off. Three seconds later, starts again and repeats. Never makes it all the way into Android system. I let it sit for a while and when I pick it up, without touching any buttons, it repeats all of this. I suppose it is probably dead in general, but I don't know. Do you guys have any ideas? Again, I bought it used and from a ma/pap store who said they buy 100 in bulk, which made me skeptical, but they also had a 60 day guarantee and it was amazing the first 60 days and even after. It has been error free for 6 months, so I don't know if this is just a random issue or if the previous owner dropped it in a lake and I got lucky, or what. FWIW the damn thing has been in a case and never dropped, so it isn't anything that I have done I don't think. Thanks for any help.
edit: never rooted, never messed with, always been stock

Another user reported some instability since the last OTA update.
Flashing the full factory images did the trick.

a friend of mine gave me his nexus 5 to repair and its doing something similar. He had ir rooted and on latest 5.1.1 (i think). Either way, he said it was randomly locking up and rebooting. When i got it it had the red blinking light when plugged so i got a new battery. That got fixed but then the constant bootloop showed itself. I flashed TWRP (many versions, 2.6.3.1; 2.7.1.1; 2.8.7.1; the one that worked best was 2.7.1.1). So, once in twrp wiped, pushed cm 12 snapshot, flashed it, pushed gapps, falshed, pushe supersu flashed. Started the system. That precise order of things (ie: pushing flashing, then pushing something new and flashing it) was what gave me best results to actually boot up at least once. Once booted up and logging in and everything to cm i had some sort of stability (even rebooting and powering off) but i think that everything went wrong when i plugged the phone to the computer and it was back to bootloops and not even getting to the recovery. Flashed everything again. Didnt work. Had to leave the phone sit for a while (without the back casing) before trying again, in order, before getting any success. Im starting to think of ovrheating but it doesnt even get that hot...
Dunno if you guys have any ideas on this. Or if i can give you mor details to help us out.
Regards!

Looks like I'm having a similar problem to what is described here, as well as http://forum.xda-developers.com/google-nexus-5/help/bootlooped-dont-how-to-enable-debugging-t3215951
I've had one of my Nexus 5 phones running OmniROM 5.1.1 for some time now, very stably. After trying out the Marshmallow preview and going back to that ROM, I started having spontaneous hard reboots and hard crashes. The phone would often boot loop before even getting to the OmniROM boot animation. It was also very recalcitrant about entering and staying in the boot loader, rebooting spontaneously shortly after rendering the boot loader screen. I was occasionally able to "grab" control long enough to get it to boot into TWRP, from which a boot to Android seemed to usually get it out of the loop and into running Android.
I've flashed back the boot loader and baseband from factory-stock 5.1.1 LMY48M (HHZ12h and 2.0.50.2.26) using the flash-base.sh script from a freshly downloaded and extracted hammerhead-lmy48m. Things appeared to be OK last evening and this morning, but things got worse today.
Now the phone is in a state where it is not responsive to the power button when unplugged. I can hold it down for 30 seconds with no response.
If I plug in USB, it spontaneously starts rebooting, not showing more than about two seconds of the Google boot loader screen. If I hold the down-volume button, I can get the boot-loader screen, but no matter how fast I try to be, I can't select anything more than "Restart bootloader" (or "Power off") option before it spontaneously reboots (to boot loader).
As far as I know, the battery had a significant charge before this started happening.
I see the same behavior if the phone is connected to a USB charging source, rather than a USB port.
I've tried pulling the SIM, but that doesn't change the behavior.
adb wait-for-device never returns, so poking it over adb doesn't seem to be an option.
fastboot devices also doesn't see the phone, for the brief time the boot loader is running.
Any suggestions on how to get this into the boot loader so I can at least re-flash it?
Nexus 5 D820(E) 32 GB
Edit:
WaxLarry said:
In my opinion your problems seems power button's related.
Click to expand...
Click to collapse
Trying to see how I can "clean" or "clear" the power button now.
Edit:
Paul22000 said:
This morning my Nexus 5 was turned off all of a sudden after not having used it for 20-30 minutes. I held the power button and nothing. I plugged it into power and the "Google" screen appeared. It then went into a reboot loop on and off, on and off, on and off. I held the Volume Buttons and it went into fastboot, but then boot looped out again and again. Searching on Google yielded that this was indeed a common problem. [...]
Click to expand...
Click to collapse
Edit: Repeatedly pressing the power button seems to have temporarily allowed a boot to Android.
In retrospect, I had noticed over the last few days that the phone didn't seem to respond properly to the power button, either "ignoring" it, or when a second press got things started, it would unexpectedly come up with the long-press-volume menu.
One link on how to replace the power switch yourself is http://protyposis.net/blog/replacing-the-nexus-5-power-button/

Ok @jeffsf keep going on this thread. I had the same damn experience, that ended with RMA. LG said that the problem is related to some tension change in the power button. After the RMA I used the phone totally stock and never had a problem. Two months ago I switched to blu_spark kernel and some weeks after i noticed some problem. When I pressed the button to lock the screen, phone locked itself and then screen turned on, sometimes showing the shutdown option. So i understood that something was happening to the power button. I tried to overvolt with a +5mV on general offset and since then i never had problem. If you can enter recovery or bootloader i suggest you to flash some kernel with volt change support and then overvolt the general offset... and keep finger crossed

jeffsf said:
Looks like I'm having a similar problem to what is described here, as well as http://forum.xda-developers.com/google-nexus-5/help/bootlooped-dont-how-to-enable-debugging-t3215951
I've had one of my Nexus 5 phones running OmniROM 5.1.1 for some time now, very stably. After trying out the Marshmallow preview and going back to that ROM, I started having spontaneous hard reboots and hard crashes. The phone would often boot loop before even getting to the OmniROM boot animation. It was also very recalcitrant about entering and staying in the boot loader, rebooting spontaneously shortly after rendering the boot loader screen. I was occasionally able to "grab" control long enough to get it to boot into TWRP, from which a boot to Android seemed to usually get it out of the loop and into running Android.
I've flashed back the boot loader and baseband from factory-stock 5.1.1 LMY48M (HHZ12h and 2.0.50.2.26) using the flash-base.sh script from a freshly downloaded and extracted hammerhead-lmy48m. Things appeared to be OK last evening and this morning, but things got worse today.
Now the phone is in a state where it is not responsive to the power button when unplugged. I can hold it down for 30 seconds with no response.
If I plug in USB, it spontaneously starts rebooting, not showing more than about two seconds of the Google boot loader screen. If I hold the down-volume button, I can get the boot-loader screen, but no matter how fast I try to be, I can't select anything more than "Restart bootloader" (or "Power off") option before it spontaneously reboots (to boot loader).
As far as I know, the battery had a significant charge before this started happening.
I see the same behavior if the phone is connected to a USB charging source, rather than a USB port.
I've tried pulling the SIM, but that doesn't change the behavior.
adb wait-for-device never returns, so poking it over adb doesn't seem to be an option.
fastboot devices also doesn't see the phone, for the brief time the boot loader is running.
Any suggestions on how to get this into the boot loader so I can at least re-flash it?
Nexus 5 D820(E) 32 GB
Edit:
Trying to see how I can "clean" or "clear" the power button now.
Edit:
Edit: Repeatedly pressing the power button seems to have temporarily allowed a boot to Android.
In retrospect, I had noticed over the last few days that the phone didn't seem to respond properly to the power button, either "ignoring" it, or when a second press got things started, it would unexpectedly come up with the long-press-volume menu.
One link on how to replace the power switch yourself is http://protyposis.net/blog/replacing-the-nexus-5-power-button/
Click to expand...
Click to collapse
I got a notification for this post since you quoted me. I'm not sure if you're having the same problem but I'll tell you what happened to me, just in case. I called T-Mobile and they referred me to the nearest 3rd party phone repair shop. I went there and after an evaluation, the repairman told me the power button on my phone was indeed broken. They replaced it for $55.
The story doesn't end there though. I took my phone home and a few hours later I tried to use bluetooth and it didn't work. I took it back and found out that unfortunately, when the guy replaced the power button, he inadvertently broke the bluetooth. There's no way to fix bluetooth without replacing the motherboard entirely, which would cost $200. I'd rather buy a new phone at that point since my Nexus 5 was getting old. He refunded me, which was nice. At least the power button worked so I could use my phone. Bluetooth isn't as valuable as being able to you know, turn on the phone, so at least it was a net gain.
After that, I purchased a Nexus 6 and rooted it so I could use double-tap-to-wake (along with the automatic screen on when you pick up the Nexus 6). I also use the following app in order to turn off the screen by swiping up from the home button (I don't care about losing the shortcut to Google Now): Screen Off and Lock
I can now literally go weeks without using the power button on my Nexus 6. (I literally only use it when tap to wake sometimes becomes unresponsive which is rare.)
Bottom line: I will never buy another phone without tap to wake functionality! :good:

A local repair shop here indicated that one sometimes does changing the power switch resolve the issue. They have seen situations where the issue appears to be one of the power-management ICs. Just something to be aware of when examining the potential cost of a repair and who you would have do the work.

Blinking Logo phone not working.

Please help my phone is confused like it is blinking lg logo but not getting on. In charge it gets on but in few seconds it gets off.

I think you are in soft brick state for some reason.. Did you try to do anything prior to this situation?

How did that happened? Similar issue happened to me, heres my post from other thread:
My H955 suddenly rebooted and it keeps on bootloop. It turns on fully and after 10-30 seconds (the hotter it gets, the less time it stays booted up) reboots again. After I left it to cooldown, there was error that root is gone or smth like that, and I had to agree to EULA and terms&conditions but the phone rebooted again. Maybe some kind of update was pushed in or whatever. This is the first time for me to happen. I have not installed new apps or mods on my phone like in two weeks.
Btw, seems like this is soft reboot, because there is no sounds and it didn't asked for SIMs PIN. I guess it has something to do with xposed..
I have used this method http://www.hard-reset.mobi/lg-g-flex-2-hard-reset/#to do factory reset. It seems to work, however phone still reboots. @mnshkpr8 try this to do factory reset, maybe this will help you.
Later I will try this http://forum.xda-developers.com/g-flex2/help/to-unbrick-g-flex-2-ls996-t3286105

Hi. I have similar problem here.
My phone wont pass LG logo if without charging on, the phone keep booting.. And if i charging on the phone just works fine, but if i plug out the charger the phone just turn off and restart again. Mine still using stock rom. Any suggest ?

This happened to me today as i edited one system file so I could get any app on split screen, I used flashtool and flashed the same kdz in normal mode, It flashed and everything is normal again.

any solution to this?

[Solved] S6 G920V reboot loop, cannot boot into maintenance, only ODIN mode

Hi!
Very weird situation. Before that everything was stock and OK (no custom ROM or anything).
- If the phone is unplugged, nothing works at all (key combinations,...)
- The battery is charged, at some point, when totally off, it showed the battery charging, 60% at least. But have not been able to go back into this mode.
- When connected, it starts booting, but keeps rebooting very fast (1-2 s after Samsung splash screen).
- Unable to boot into Recovery mode (UP+HOME+PWR, for wiping cache,...). Just does nothing, howerver long I wait
- Unable to boot "directly" into Maintenance Mode (all buttons), more on that later
- Can boot into Download (ODIN) mode (DOWN+HOME+PWR) very easily. I was able to flash stock ROM, but nothing changed.
- From ODIN mode I can boot into Maintenance mode (all buttons). I can navigate the menu, but any choice, even Factory Reset, gets me directly back to the reboot loop...
As I can not even turn it off, I cannot drain the battery (at least not quick). As soon as I disconnect the cable it goes dark (whatever mode I am in).
Anything I missed that I could try before throwing the phone?
Thanks!

SOLVED
Just to leave a trace on what happened:
- Left the phone alone, un plugged, for 8-10 hours.
- Just to see, tried to reboot it normally,
- It booted on a blue/cyan display, with "installing updates".
- At one point before I had that screen, but after 10 seconds it rebooted into the loop cycle. And after playing with the recovery reboots, I had never managed to get this special boot again.
- This time it stayed on "installing updates" for 1-2 mn, then rebooted, and Voilà!!!
So apart from my magic touch of doing nothing, don't really know what happened... So much for the recovery recipe!

A fairly similar thing happened to my girlfriend's g920v yesterday. We haven't been that lucky that it got fixed.
The situation is slightly different though, it boots for about 3 seconds, makes the low battery sound, battery indicator says 0%, then shuts back down.
Tried flashing stock in odin a few times, a few factory resets, nothing.
It seems like an OTA update failed and now the stupid locked bootloader won't let me or the or OS fix it.

Sorry you were not as lucky... But as you said the problem seems a little bit different, as I never had an empty battery warning. I agree though that it looks as a bad update stuck somewhere.

guimou_qc said:
Sorry you were not as lucky... But as you said the problem seems a little bit different, as I never had an empty battery warning. I agree though that it looks as a bad update stuck somewhere.
Click to expand...
Click to collapse
There's got to be some connection of some sort, yours is the 4th post I've seen here or on Reddit this month about bootloops probably related to updates

Samsung GT-P3110 Bricked(?)

Hello, recently I started reading comics and found my old tab lying around so ill give it a go
First thing first it wont boot becaue it had no charge obviously (been there for like some years), then I tried to plug the charger but to no avail
I cleaned the contacts of the charger with a dry brush and start charging which then my tab starts charging!
when I booted, I think it was CM 12 (or 13? the one with andy I believe) and everything is force stopping.
I then tried to go to recovery mode and wipe data, but when i rebooted it it just stuck with the splash screen (the one before bootanimation)
I turned the tab off and tried to boot to download/recovery mode but it would just boot me right to the splash screen again, which mean i cant go to TWRP or ODIN.
And it doesn't always want to turn on, sometimes it just stuck there with black screen (not turned on) even if i press power/combo button, sometimes it pop up to the splash screen. what i notice is that i should wait for the charging indicator to show up before i can try to boot again (i got enough juice now, 56% the last time it turned on)
also one thing i remember is something about F2FS but im not sure what that is, but that might be a clue to my situation so ill just write this down here

Hi
Same here with P5110 and Slim7. I can't start it anymore....
I didn't use it for some time and then i charged it to 100% and it started but everything seemed to lag. Then i turned it off and wanted to look for another rom or a newer build. But i can't start it anymore. when i plug in the charger i can see the charging screen but beside of that i can do nothing. It has no effect when i push the on/off button or anything else...and it has to be at nearly 100%...