Develop Bugs

[Q] Sprint Phone boots up only when plugged in. If unplugged it goes into a bootloop.

A few days ago, I flashed a 4.4.2 rom and kernel. I noticed that it was randomly rebooting so I went ahead and flashed another rom, this time without a new kernel. Everytime I flashed I did a wipe of the device. When I did this the Galaxy Note 2 splash screen would come up then the rom boot logo. But then it would go back to the splash screen and the boot loop would continue. I ultimately discovered that the phone would get past the boot loop sequence if either plugged in via USB or AC. I set up my phone thinking it was cool but once I unplug it, and start using the phone, it reboots itself and starts up the boot loop cycle again. I've gotten fed up to the point that I unrooted the phone back to a stock 4.3 rom thinking that might solve the problem but even with the stock rom the boot issue persisted. I've since then used Odin to put new recoveries in hopes that this could be the issue but still the same problem persists. I've had to start carrying around my laptop with me to and from work just to have the phone plugged in because otherwise it will eventually shutoff and start the bootloop. I'm usually pretty good at solving these issues but right now I'm without any answers. I haven't checked to see if possibly it could be a battery issue but I haven't had an opportunity to find someone with a Note 2 to try out this theory...has anyone had somewhat remotely close to a similar issue and if you have, did you solve it? Someone help...lol otherwise my Note 2 may have seen it's final days although I'm not in the market of finding another phone right now.

bkjay78 said:
A few days ago, I flashed a 4.4.2 rom and kernel. I noticed that it was randomly rebooting so I went ahead and flashed another rom, this time without a new kernel. Everytime I flashed I did a wipe of the device. When I did this the Galaxy Note 2 splash screen would come up then the rom boot logo. But then it would go back to the splash screen and the boot loop would continue. I ultimately discovered that the phone would get past the boot loop sequence if either plugged in via USB or AC. I set up my phone thinking it was cool but once I unplug it, and start using the phone, it reboots itself and starts up the boot loop cycle again. I've gotten fed up to the point that I unrooted the phone back to a stock 4.3 rom thinking that might solve the problem but even with the stock rom the boot issue persisted. I've since then used Odin to put new recoveries in hopes that this could be the issue but still the same problem persists. I've had to start carrying around my laptop with me to and from work just to have the phone plugged in because otherwise it will eventually shutoff and start the bootloop. I'm usually pretty good at solving these issues but right now I'm without any answers. I haven't checked to see if possibly it could be a battery issue but I haven't had an opportunity to find someone with a Note 2 to try out this theory...has anyone had somewhat remotely close to a similar issue and if you have, did you solve it? Someone help...lol otherwise my Note 2 may have seen it's final days although I'm not in the market of finding another phone right now.
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Click to collapse
I would suggest that you try another battery. Kinda sounds like an issue with the device not getting proper power supply. If I were you I would try finding a friend or coworker who has the same device and try using theirs. If it boots and runs then a replacement battery is all you need. I have had this issue with a previous phone (HTC 3d) but not this device.

jlmancuso said:
I would suggest that you try another battery. Kinda sounds like an issue with the device not getting proper power supply. If I were you I would try finding a friend or coworker who has the same device and try using theirs. If it boots and runs then a replacement battery is all you need. I have had this issue with a previous phone (HTC 3d) but not this device.
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Thank you for the reply..I will check to see whom may have a Note 2 at work. The ones who did have other phones now I believe. I know of one co-worker who has a Note 3 but not sure if that would be something that I could try..I'll report back tomorrow with my findings...

Yeah I doubt the N3 has the same battery but hopefully you can find someone.
Sent from my SPH-L900 using XDA Premium 4 mobile app

D855 stuck in ever lasting bootloop

So my mom's G3 started acting weird a couple weeks ago, it would randomly shut down but could be started without big problems. However yesterday it shut down and when we tried to restart it it became stuck in a bootloop. I've thought about hard reset but my mom has some pretty important stuff on it and prefers not to lose it. I've also thought about kdz flash but since I'm not sure about her phone's current firmware (i'm sure that it's lollipop, but I don't know which exact version) I can't do anything.
How can I solve this, or, at least, know which exact firmware is the phone running ?
By the way it's a 100% stock phone, no root no recovery, nothing.
Thanks in advance.

metamoq said:
So my mom's G3 started acting weird a couple weeks ago, it would randomly shut down but could be started without big problems. However yesterday it shut down and when we tried to restart it it became stuck in a bootloop. I've thought about hard reset but my mom has some pretty important stuff on it and prefers not to lose it. I've also thought about kdz flash but since I'm not sure about her phone's current firmware (i'm sure that it's lollipop, but I don't know which exact version) I can't do anything.
How can I solve this, or, at least, know which exact firmware is the phone running ?
By the way it's a 100% stock phone, no root no recovery, nothing.
Thanks in advance.
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Click to collapse
Many people has such problem mine one able to make it boot again by plugging in to a charger, still it will still reboot frequently, my friend fixed his by replacing motherboard while some others said it is related to battery

I've tried plugging in the charger but never thought of the battery.
I'll try switching batteries, thanks for advice.
UPDATE: I could get the phone on again by switching batteries, thanks a lot !
If I flash a new firmware can the old battery work again ?

metamoq said:
I've tried plugging in the charger but never thought of the battery.
I'll try switching batteries, thanks for advice.
UPDATE: I could get the phone on again by switching batteries, thanks a lot !
If I flash a new firmware can the old battery work again ?
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I.don't think it is related to Rom as I am using stock MM

We're going to buy a new battery, hope this fixes it for good.
Thanks for your help.

Dead AQ4501

Nearly At the end of every month my my phone gets into some kinda software problem (example : Google has stopped working then process.android has stopped working and some other random **** which is quite annoying) whenever this happens the phone restarts on its own and never turns on,i mean it does but is stuck on loading screen.(note: I dont do anything stupid which might harm my phone. )So i have to flash my phone with spflashtool it.This time when i flashed the phone it didnt turn, i held the button for long but it was of no use, so i thought it might be the low on battery,but when i put it on charge nothing popped up... it wasnt charging. Then I thought it was the battery but my battery wasnt swollen and the day before I flashed it,it was running fine with full charge. , there was no sign of battery problem anytime i used it the consumption was normal.
Please help me fix this problem, and I also want a permanent fix to the software problem too.
Any senior member please help..
TIA
:fingers-crossed:
Update:I flashed the phone with new files but results were the same :'(

Saad6459 said:
Nearly At the end of every month my my phone gets into some kinda software problem (example : Google has stopped working then process.android has stopped working and some other random **** which is quite annoying) whenever this happens the phone restarts on its own and never turns on,i mean it does but is stuck on loading screen.(note: I dont do anything stupid which might harm my phone. )So i have to flash my phone with spflashtool it.This time when i flashed the phone it didnt turn, i held the button for long but it was of no use, so i thought it might be the low on battery,but when i put it on charge nothing popped up... it wasnt charging. Then I thought it was the battery but my battery wasnt swollen and the day before I flashed it,it was running fine with full charge. , there was no sign of battery problem anytime i used it the consumption was normal.
Please help me fix this problem, and I also want a permanent fix to the software problem too.
Any senior member please help..
TIA
:fingers-crossed:
Update:I flashed the phone with new files but results were the same :'(
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Click to collapse
same happens to me bro my android one is also dead same problem as yours when i tried with sp flash tool its end up with this error..... scr shot attached

☹
Bro,I flashed it thrice after but it didn't give any errors,but sadly it just wont turn on
If it were permanently bricked then it wouldn't have detected the phone...and bro lemme give you a suggestion,try changing it to firmware upgrade instead of download only.
Thanks for the reply

simmilar issue
same problem pls help in my case when i charge not charging the battery indicator just pops up and out i think its a battery error put in a new battery try to boot up nothing try to go in recovery nothing i have nothing to boot up from i think ill still try using fastboot and/or flashing and reporting back(ima try dead usb flash using spflash tool)

okay flashing works perfectly now i just need for figure out if the problem is with the charging/battery or the phone is dead

Same Problem
Bro, i have run into exact same problem. I even went to gallery and gave them the phone, they said they will charge 1500 as motherboard is dead but after one month they returned to me the phone saying that motherboard is not available. They are taking almost 14 days to return money so i have to visit again on 3rd june. But coming back to problem i have tried flasing with and without battery for 3-4 times. every times it shows success but the phone wont start. Even memory test was all fine. cant figure out what's the problem. i have tried both download only and format+download mode but nothing seems to work, If anyone finds a way to fix the phone please tell ASAP.

Same problem as the OP, mine's bricked as well after it began showing random FCs. Flashed KK and LP firmwares using SP Flash Tool but to no avail. The flash was successful tho but the phone never booted up

I'm kinda stuck in a similar situation. Let's start from the beginning -
When I got my Redmi Note 3 I stopped using my Canvas A1 and vaguely i remember that it was having software issues, rather than fixing it I just kept it away for a lot of months, and vaguely I remember that it just needed some flashing of rom and it would've gotten fixed.
And after all these months i'm need of this phone again. I don't remember much in depth details of the processes involved with it like flashing stuff etc. But I gathered as much knowledge as I could from the docs I had stored as backup & from the internet.
And IMO I think the flashing process was successful, but the screen is not turning on. Only once when I connected it to PC, the charging battery sign appeared(flashing thrice) but that was it. Nothing after that. And whenever I connect it to PC it detects the phone.
For now I've given it to a repair guy but I don't have much hope. He was saying that it could be just software problem, but I don't agree. If a smart person could comment on this thread so that we all could get some benefit out of it, in order to solve the situation or at least in my case I could research on something specific in the meantime.

Note 4 either won't start, or has random reboots that make it no longer start

Have had this problem for about two weeks now. Every time I get the phone able to boot (either by reflashing a rom or odin) it will work for a few hours then it'll freeze in the middle of use or idle and restart. After restarting a few times the phone will no longer boot and I have to reflash it with odin or TWRP. It's happened so much though that as of today even if I get it to start it'll end up freezing up shortly after booting, get stuck on the black start screen and hang there until I pull the battery. At that point the phone will only boot into download or recovery. I'm at the end of what I can do and out of ideas.
So far I have tried
Odin to:
N910PVPS4COK1_N910PSPT4COK1_N910PVPS4COK1_HOME.tar.md5
N910PVPU4DPH4_N910PSPT4DPH4_N910PVPU4DPH4_HOME.tar.md5
and flashing multiple different roms to try to fix it.
Sometimes it won't even mount data, cache, system, etc within twrp.
I've also tried to format each individual partition when it wouldn't start no matter what and that did make it so it was able to start but the same problems were there after it did start.
I've searched and I cannot find a solution to anything similar to the problem I'm having. If anyone has any ideas they'd be greatly appreciated.

justintworley said:
Have had this problem for about two weeks now. Every time I get the phone able to boot (either by reflashing a rom or odin) it will work for a few hours then it'll freeze in the middle of use or idle and restart. After restarting a few times the phone will no longer boot and I have to reflash it with odin or TWRP. It's happened so much though that as of today even if I get it to start it'll end up freezing up shortly after booting, get stuck on the black start screen and hang there until I pull the battery. At that point the phone will only boot into download or recovery. I'm at the end of what I can do and out of ideas.
So far I have tried
Odin to:
N910PVPS4COK1_N910PSPT4COK1_N910PVPS4COK1_HOME.tar.md5
N910PVPU4DPH4_N910PSPT4DPH4_N910PVPU4DPH4_HOME.tar.md5
and flashing multiple different roms to try to fix it.
Sometimes it won't even mount data, cache, system, etc within twrp.
I've also tried to format each individual partition when it wouldn't start no matter what and that did make it so it was able to start but the same problems were there after it did start.
I've searched and I cannot find a solution to anything similar to the problem I'm having. If anyone has any ideas they'd be greatly appreciated.
Click to expand...
Click to collapse
Try falsh repair firmware with pit file in odin.
Do factory reset immediately from recovery after flash firmware to get clean OS.
You can download repair firmware from here
https://www.androidfilehost.com/?fid=24591020540821805
Extract firmware you will get pit file inside of it.

Trex888 said:
Try falsh repair firmware with pit file in odin.
Do factory reset immediately from recovery after flash firmware to get clean OS.
You can download repair firmware from here
https://www.androidfilehost.com/?fid=24591020540821805
Extract firmware you will get pit file inside of it.
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Click to collapse
I used both of them for a restore and did a factory reset and things looked good for about 30 minutes and now its back to the random freezes that turn into a restart

justintworley said:
I used both of them for a restore and did a factory reset and things looked good for about 30 minutes and now its back to the random freezes that turn into a restart
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Click to collapse
I suppose this is a long shot, but are you running on the original or an old battery? It's possible that a bad battery is causing the reboots. I was back and forth to the Sprint store about 4 times in one week. They first tried flashing the firmware. (Yeah, I could have done it, but I have insurance.) They sent me home and on the way my phone rebooted itself. I got a replacement Note 4, but it started getting hot, then also rebooting. They "let" me upgrade to a Note7, which I loved. I had to give it back even though it was from the new, supposedly safe batch. At this point, I couldn't even get the Note 4 to boot at all. Boot loops, or would boot into download mode. Couldn't do anything with it, except pull the battery. Got a third Note 4, but also ordered a new battery pack from Sprint. They were and still are, only $24.95, with free shipping! You get a new battery, an external charging unit and a carrying case for the battery. (You have to use your own charger.) This finally fixed the problem. I had two batteries when I ordered the new one. I'm pretty sure one of the older batteries was defective, even though it wasn't bulging. I'm still using the other one that's also older, even though it is bulging a bit. It charges and runs fine. No over-heating. So, my problem was a combination of a defective battery and a couple of bad phones. The other thing was some of the previous firmware seemed to make some Note 4s run hot or get hot while charging. Things are much better since PG1. YMMV.

I had this issue and sent my phone back to Samsung THREE TIMES, I thought I bricked my phone from custom rom.
Turns out it was my battery. Sounds dumb, but true. Strangely even with battery out, I was having issue. Once I put in new good battery issue resolved.

I had that issue on my pc and my note. I had a creepy stalker in full control of my device (which basically was a virtual machine). I could tell when I was on the right track to get rid of him because it shut me down. I can't say that's what's going on with you but it is a thing.
Sent from my SM-N910P using Tapatalk

Note 4 batteries are dying for lots of people anywhere from 18 months to just over 2 years, and the symptom is often fail to boot, boot loops, etc. As piggynuts said, it's not logical, but it's true. It happened to me, and when I replaced the battery, everything was fine.

Think ive killed it :/ Tab S2 T813

ok so bottom line is, I was in the middle of flashing official rom when at about 25% it failed. Don't ask why! (i still had recovery at this point) so I went ahead and cleaned absolutely everything thinking i'll just try and reflash as before. Now with power lead out it won't switch on at all and when power is supplied it shows message "An error has occured while udating the device software." loops at approx 3 sec intervals cant do anything with it.
Ive tried everything I can think of all to no avail! yes its my own fault bla bla bla just wondering if i act have f***** it.
Thanks to anyone with any ideas

You probably going to get a better help at TAB S2 board this is for the tab S1.
If it is hard bricked there is JTAG methods that can help, just need to find one for your device, not easy though.
But all I can do is share my experience with something like this, in a more "cheap" way than JTAGs, dunno if it helps:
I never had a similar problem on the tab S. But in the past a galaxy player 5.0 of mine had a very similar problem (as far I remember the screen just powered the back light but without any letters or simbols)
in 2012, I bricked it trying to mount a swap partition (280mb RAM ftw) accidentally pointing the wrong partition, and got the entire internal storage corrupted.. everything.. system, bootloader, recovery etc
My player was turning on only connected to a USB or charger, like yours. in fact It was hard bricked
I was able to recover it using Linux (because it is the only system able to communicate with the bricked device I had)
The problem is that everything need to be very specific, for example I used a software made for the galaxy s1 to "revive" my player 5 (both have the same hardware) it just made the device be detected via ADB. So I needed to prepare a SD with the same size as the internal storage (in this case 8gb) using the Linux terminal to mount in the SD an exactly schematic of the internal memory using a dump of another device that a xda user shared, (the dump was empty only with the bootloader, recovery etc) but it still had 8gb decompressed. So after that I used ADB to push the SD card content to the internal memory. And it get back to life \○/
Well.. it took me 1 week with a guide!! On the trial and error method. But it worked.. not perfectly, I get bootloops every time I try to flash a rom via Odin, but recovery works, and I have the device working until today

Hi, I Greatly appreciate your reply and advice. Think tho that your solution is a bit beyond my know how I know a little about ADB etc but i would have difficulties in compiling necessary files to sideload. Also many tanks for the link din't realise. Thanks Pal!

Alpha1BA said:
ok so bottom line is, I was in the middle of flashing official rom when at about 25% it failed. Don't ask why! (i still had recovery at this point) so I went ahead and cleaned absolutely everything thinking i'll just try and reflash as before. Now with power lead out it won't switch on at all and when power is supplied it shows message "An error has occured while udating the device software." loops at approx 3 sec intervals cant do anything with it.
Ive tried everything I can think of all to no avail! yes its my own fault bla bla bla just wondering if i act have f***** it.
Thanks to anyone with any ideas
Click to expand...
Click to collapse
If you can get it in to download mode you can flash stock rom back on it.......refer to xda samsung tab s2 for more details on this........

thx for reply but it reboots approx every 3 seconds so I dont have enough time to do anything with it :/

Alpha1BA said:
thx for reply but it reboots approx every 3 seconds so I dont have enough time to do anything with it :/
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Plug in changer and push power and volume up and down all together and you will see the battery charger icon then you can get it in to download mode from there.....

stinka318 said:
Plug in changer and push power and volume up and down all together and you will see the battery charger icon then you can get it in to download mode from there.....
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Stinka ure a superstar (atm!) I did as you suggest to no avail but I noticed a slight increase in the time it took to start rebooting again. I do not know which buttons did this but some 20 later it lasted long enough for me to be able to flash twrp. Now i havent actually tried that as yet as i wanted to check with you first... I have the battery logo on screen, i tried recovery and it started as it should but then rebooted, now im unsure at this time whether the battery is almost dead or not so i got it on charge and have the grey battery with a white flash inside... is this what i want for now until its charged? if so i'll keep you informed thamnks more than u know if uve helped me fix this, the reason i was flashing was because when i received it (no warranty!!) the screen sometimes flickered and it would constaly end up rebboting after digging around re that im lead to believe it need a new battery and for the connecting wires to be resoldered. Anyways thanks again n as I say i'll keep this updated
Cheers
Tony

one of the probs i hab/have with this unit is that it takes approx a day to fully charge!!! when i received it the screen flickered on the odd occasion but it was rebooting much more frequently. It came with stock n not messed with previously (i new this prior to purchase so got it for right price thinking it only needed flashing, how wrong was I!!!) so I flashed and encountered the above mentioned problems! thanks to stinka I surprisingly managed to flash a recovery... now provided all goes to plan, which rom would one suggest for stability and generally hassle free and prusuming the aforementioned probs, rebooting etc are still there what could i try to stop that? other than a debloated stock I found Lineage an excellent rom but still the problems got so bad the unit became unusable and was lucky not to go out the window. Im thinking do i start with a replacement battery and check the wires etc or could this still be a software issue??

if i endevoured to do the hardware myself would I attempt it by removing screen or the base for access to battery/connector??
Thanks again

In the tab s1 the best way is removing the back cover, but for some reason tab s2 seen to be the screen... at least in this guide: https://www.ifixit.com/Guide/Samsung+Galaxy+Tab+S2+Battery+Replacement/56616
Look like alot more complex than the s1 :/

RoIlingThunder said:
In the tab s1 the best way is removing the back cover, but for some reason tab s2 seen to be the screen... at least in this guide: https://www.ifixit.com/Guide/Samsung+Galaxy+Tab+S2+Battery+Replacement/56616
Look like alot more complex than the s1 :/
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Thanks for that!!!
Tony
does look somewhat OTT!!!

will i have to odin stock first then flash rom i want or will it go straight from first flash via twrp considering there is absolutely nothing on phone at mo apart from twrp.

Alpha1BA said:
if i endevoured to do the hardware myself would I attempt it by removing screen or the base for access to battery/connector??
Thanks again
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My guess is your issue is lack of charge in the device. That's the reason for the flashing failure and the reboot loop with the firmware error.
Bang it on charge for a while then irrespective of what it's doing, whether it's looping or not, hold POWER + HOME + VOL DOWN until download mode appears.
Reflash the stock firmware with odin.

swapped battery and reflashed stock via odin. It has helped although the issues are all still there its just they happen less frequently which doesnt mean its any less frustrating.