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[Q] my phone keeps on making randoom reboot, and never turns on.

Hi
I dont know exactly what wrong with it. Yesterday, i got so many reboots. The problem is that when the phone reboots, nothing comes up except for the phone keeping on vibrating forever. I have to take out the battery, and insert it back in again. Another strange thing is that, sometimes, right after I insert the battery in, (without holding the power button) the phone starts automatically, but after the Samsung loho, it keeps on vibrating. Sometimes, it wont let me in recovery mode.
I did a clean flash of the att official Jelly bean via Odin lasf night to see if it still happened. The truth is, its just happened when I tried to get om facebook. It kept on vibrating until I pressed and held the power button twice to make it reboot. Difference between Att official jelly bean and other 4.1-4.2 rom is that att rom lets me reboot normally after pressing the power button (twice), other roms will maintain the same thing until I have lucky enough to get in recovery mode, and do a restore. However, doing a restore wont solve this prolem.
Anyone can help me plz ..
Thanks a ton.

econan1214 said:
Hi
I dont know exactly what wrong with it. Yesterday, i got so many reboots. The problem is that when the phone reboots, nothing comes up except for the phone keeping on vibrating forever. I have to take out the battery, and insert it back in again. Another strange thing is that, sometimes, right after I insert the battery in, (without holding the power button) the phone starts automatically, but after the Samsung loho, it keeps on vibrating. Sometimes, it wont let me in recovery mode.
I did a clean flash of the att official Jelly bean via Odin lasf night to see if it still happened. The truth is, its just happened when I tried to get om facebook. It kept on vibrating until I pressed and held the power button twice to make it reboot. Difference between Att official jelly bean and other 4.1-4.2 rom is that att rom lets me reboot normally after pressing the power button (twice), other roms will maintain the same thing until I have lucky enough to get in recovery mode, and do a restore. However, doing a restore wont solve this prolem.
Anyone can help me plz ..
Thanks a ton.
Click to expand...
Click to collapse
Search for sticky/stuck power button. You almost definitely have it.

mrfeuss said:
Search for sticky/stuck power button. You almost definitely have it.
Click to expand...
Click to collapse
there is nothing wrong with the power button

econan1214 said:
there is nothing wrong with the power button
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Click to collapse
vincom said:
32) Q. why does my phone not start and just bootloops and/or vibrates every couple of seconds
A. could be a "sticky power button", read the next question and the info section in the 1STOP STICKY
33) Q. how do i test for a stuck "sticky" power button
A. TEST: NO CABLE PLUGGED IN: Remove then reinsert the battery and if the phone turns on by itself and then takes approx 10 sec's to turn off and then starts vibrating every couple of seconds then its for sure a power button problem, its stuck, goto the link in the previous answer for a possible fix.
The key thing you need to establish is if reinserting the battery restarts the phone w/out u touching the power button, if so then the button is stuck
34) Q. how do I replace the power button
A. If you have determined that's its a stuck power button read post #16 PROCEDURE ON REPLACING POWER BUTTON, on that thread there are pictures b4 that post
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Are you sure about that?

econan1214 said:
there is nothing wrong with the power button
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Click to collapse
Yes there is
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta

had this issue a few days ago, it absolutely is. if you never touch the button it sometimes will turn on and work for a while.

You should try a usb jig. I hear they work the odd time for a skyrocket... Ha
Seriously though... power button.

econan1214 said:
Hi
I dont know exactly what wrong with it. Yesterday, i got so many reboots. The problem is that when the phone reboots, nothing comes up except for the phone keeping on vibrating forever. I have to take out the battery, and insert it back in again. Another strange thing is that, sometimes, right after I insert the battery in, (without holding the power button) the phone starts automatically, but after the Samsung loho, it keeps on vibrating. Sometimes, it wont let me in recovery mode.
I did a clean flash of the att official Jelly bean via Odin lasf night to see if it still happened. The truth is, its just happened when I tried to get om facebook. It kept on vibrating until I pressed and held the power button twice to make it reboot. Difference between Att official jelly bean and other 4.1-4.2 rom is that att rom lets me reboot normally after pressing the power button (twice), other roms will maintain the same thing until I have lucky enough to get in recovery mode, and do a restore. However, doing a restore wont solve this prolem.
Anyone can help me plz ..
Thanks a ton.
Click to expand...
Click to collapse
Flash it again and what Gapps are you using? Don not restore your apps on google--->(from first boot after flashing).

gixxer93001 said:
Flash it again and what Gapps are you using? Don not restore your apps on google--->(from first boot after flashing).
Click to expand...
Click to collapse
This is not the issue. As all others have stated, this is the classic sticky power button issue and can only be fixed by a) mashing the heck out of it to dislodge the offending dirt or lint or whatever, b) running a toothpick or other small tipped instrument around the button, or 3) taking apart the housing and cleaning behind the button. PERIOD. Trust us, we've endured this a gazillion times and this is ALWAYS the answer.
Sent from my Slimmed out Skyrocket

[Q] Please help my sony won't boot up

I'm using sony xperia V and after flashing a cyanogenmod rom which installed perfectly, until I select reboot and the screen
turns black and no matter which button combination or whatsoever I can't boot up.
The only things that happen is:
if unplugged, pressing the power button will vibrate the phone and green LED flash for a second
if plugged into computer the green LED flashes for a long time. Holding the volume+ button before plugging in will flash a blue LED light for some time
Both plugged and unplugged, the screen shows nothing at all, which means can't enter recovery mode, safe mode or download mode.
Is there anyway I can solve this? Or I can only buy a new phone or act dumb at the sony store.
Thanks in advance and sorry for any trouble
[Edit]I finally found a way to solve this problem after hours of frustration. Thanks to this amazing website which I couldn't post it here due to being a new member, which I could say it's from a website named androidgadgetmatic, really turned a completely useless brick into a perfectly working phone again. The only problem left (which happened before bricked) is that my phone couldn't read or even find SD card, any help in this area guys?

Anything else I should try before declaring my phone dead?

- Bought new October 2016, unlocked Exynos Galaxy S7
- Have been using it without issues until roughly one month ago, when it started to randomly freeze reboot itself, sometimes after corrupting the graphics of whatever screen it was on just prior to rebooting. I chalked it up to it needing a Factory Reset, which I was planning to do shortly.
- Last week I had the issue where the phone worked but the screen didn't turn on; the LED worked, I could hear notifications etc but the screen would remain unlit. I forced it to reboot by holding power and volume down, and it seemingly returned to normal after the reboot.
- Yesterday morning I was browsing Facebook when the phone froze and I got a corrupted screen, except this time instead of rebooting it just shut down itself and became unresponsive. Plugging it on wasn't doing anything, no orange charging LED; power and volume down didn't work.
Went on the phone with a Samsung rep and they told me to plug it to the charger and hold power + home + volume down for 15 seconds; A blue screen came on warning about installing a custom OS, rep told me to push volume down and decline the installation. I did, the phone turned itself off, then the battery charging icon on the middle of the screen came on as well as the orange LED. I let it charge up to about 30% and then tried to turn the phone on; the phone started bootlooping at the point where it animates the Samsung logo.
- Thought I'd try to wipe the cache partition, so I pressed power + home + volume up and it came to the blue maintenance screen with the white droid, but instead of proceeding to the part where it shows a dead droid, several black rectangles started to blink in and out across the whole screen, not always on the same places. Then shortly the phone went dead again, without responding to anything.
- After maybe half an hour I could get it to the blue custom OS screen again with power + home + volume down, and upon pressing volume down to decline I could get the battery charging icon again, but after a few seconds the green animated dots that come up when it's charging just froze, the phone went black, and that's it.
- Let it sit plugged in the charger for a few hours, but can't get it to respond to anything since; power + home + vol [up/down] doesn't do anything. Connect it to a computer doesn't do anything. Samsung rep has no help to offer except suggesting I take it to an authorized repair center.
Anything else I can try?

firesinis said:
- Bought new October 2016, unlocked Exynos Galaxy S7
- Have been using it without issues until roughly one month ago, when it started to randomly freeze reboot itself, sometimes after corrupting the graphics of whatever screen it was on just prior to rebooting. I chalked it up to it needing a Factory Reset, which I was planning to do shortly.
...........................................
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Click to collapse
Hi mate
I could be a hardware problem ...but before saying so lets try flashing the firmware again
Check this thread as a guide .
If you can boot , first do a backup of all your things
Find out what CSC you have , use an app like phoneinfo
Now go to Sammobile or from the thread i gave you and download a firmware with your CSC.
When flashing use AP, BL , CP and CSC ( not home_csc) why? because we want to format all partition , see here how to select re-partition , step 6.
If is a firmware issue this should take care of it

Hi,
Hardly doubt that this is a software/firmware problem. Probably the mainboard or the battery went faulty. Just send it to the repairing service. I suppose it is under warranty. Good luck!

MAX 404 said:
Hi mate
I could be a hardware problem ...but before saying so lets try flashing the firmware again
Check this thread as a guide .
If you can boot , first do a backup of all your things
Find out what CSC you have , use an app like phoneinfo
Now go to Sammobile or from the thread i gave you and download a firmware with your CSC.
When flashing use AP, BL , CP and CSC ( not home_csc) why? because we want to format all partition , see here how to select re-partition , step 6.
If is a firmware issue this should take care of it
Click to expand...
Click to collapse
Unfortunately I can't try that because I can't put the phone in Download Mode, it doesn't respond to vol down + power + home for whatever many seconds.

firesinis said:
Unfortunately I can't try that because I can't put the phone in Download Mode, it doesn't respond to vol down + power + home for whatever many seconds.
Click to expand...
Click to collapse
Sorry to hear that..
Not to many options left , you could try to use a USB JIG to get it into download mode......but it looks more and more like a hardware issue..

Xperia Z5 stuck at bootloop, restarts automatically, not charging

Hi there i have this Xperia Z5 Sov32 from January 2019 it was working fine until few days ago the battrey got low at 0% and i plugged it into wall charger after few minutes it have gone upto 17% i pressed the power button to turn the phone on but it gave me a gray screen, before i pressed the power button the charging green bars can be seen, but after i pressed the power button the screen goes grey and no xperia logo screen, then i tried to reset it, by pressing power button + volume up but no use, then tried power + volume down but not working no recovery mode, then i tried power + volume up and volume down, but nothing then i tried the little yellow button near the sim card slot for few seconds, it gave me 3 vibrates but nothing happens after it same gray screen when i try to turn the phone on. then i tried yellow button for 120 seconds, but same gray screen and consistent restarts automatically after few seconds of gray screen, then i tried xperia companion but it is giving me error that my phone is locked, well i cannot unlock the phone if it is not turning on. then i tried sony's orignal flashing tool Emma but that gave me same error phone is locked. then i tried to unlock bootloader with flash tool but no use gave some error which i cannot remember now. then i tried to flash the phone with like 8 different ftf stock files some old some new. but flash tools tells me it have flashed the phone but when i try to turn it on it is giving me same gray screen and restarts every 20 / 30 seconds. and i even tried the Sov32 ftf file downloaded from xperifirm but that gave me error that this bundle is not suitable for your device. all other generic and international versions gave no error and shows successfully flashed. but phone gave same gray screen when i turn it on. and after flashing i tried sony companion and Emma both shows my phone is still locked and not flashed, showing me same old firmware version LOL i dont know what else to do anymore since i have tried every possible trick to fix this damn device. this phone have changed my view of thinking, i have always thought sony is better then all others because i only used sony and motorola all my life. and from past 7 years i have using sony. but if i have to change my phone then i will never buy sony phone again. lost my 3 days on it, trying to fix it. previously i have xperia z and xperia mini pro they were better phones. i still have them. and they are still working. i even flashed xperia mini pro many times no issue. so what should i do now is there any other method left which i have not tried yet ? and btw please dont refer me to use carbon rom or any other rom because this goddam phone is not turning on and not charging. it restarts every few seconds while on charging. so i cannot copy some files into the phone.

Bricked after a force shutdown, looking for advice

Greetings, I'll try to keep it short. My device is a Zenfone 7 Pro (ZS671KS)
I was using the phone normally and then for some reason it got stuck and I had to perform a "holding the power button" force shutdown to get out of it. The same thing has happened a few times before and it always boots back to normal. This time however, happened after I just downloaded and installed the latest firmware update when the phone was in its "waiting for reboot" state.
It has been bricked ever since and holding the power button will just send it into a boot loop (a brief vibration every once in a while). Whatever I do nothing will show, no logo no LED indicator light or anything like that. All black. Holding volume up or down + power also don't do anything. Vibration is the only response I am getting.
The phone itself was not modified in any way, it was never rooted, didn't have a custom firmware and stuff. Is there anything I can try to save it and all the data inside (data being my priority) before I give up and admit defeat?
Don't think I've see anything quite like it before, so any idea is appreciated.