Started two days ago. Phone would randomly power off and boot back up. Finally it shut off and would not power back on. I had Cm11 installed with CWM 4.0.4.6. The phone powers on after inserting the battery. The Samsung logo flashes and then it shows the "Galaxy S3" logo with the CM logo below it. The phone the powers off. I have done a factory reset, cleared both caches, formatted the system folder, flashed SlimKat from recovery and tried another known good battery. At this point I figured I would reflash CWM but if I put the phone into download mode, it powers off after just a few seconds as well.
If I boot the phone into CWM, the phone stays on as long as I want it to so it makes me think this might be fixable. Just need some help.
Ask in your device forums.
My apologies. Didnt realize there was another S3 board. Found and posted there.
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Hi
I used the factory reset function on my tab a couple days ago to delete all apps and such and upon reboot it was stuck at the slowly flashing Samsung logo and would proceed no further. I left it for a good hour and a half in that state before I tried hard resetting it but no dice. I've had it do this before when I first rooted it, but unlike that time it doesn't replay the whole boot animation, just the logo part at the end of the animation. I managed to get it in clockwork mod or bootloader whatever that function is and cleared all the caches and did a reboot recovery (i believe thats what it was called) but upon reboot it did the same exact thing. So after that I gave up and went to bed, but the next day when I went back at it again it wouldn't even turn on. After messing around with the power button and volume button trying to get into recovery mode it finally turned on but went to the battery screen with no other actions. I've tried several times to get it into recovery mode but it either wont turn on or it just goes to the battery screen. I have it plugged into my pc at the moment and apparently it is in recovery mode or something because Odin recognizes it. Says [0:COM3] and the box is yellow, but the screen never turns on though when holding the power button and volume button while it's plugged into a pc, the pc recognizes something plugged into the USB slot. My pc is only recognizing it as a modem and will do nothing else with it.
I have the Starburst rom and the overclocked kernel installed and would like to either revert it to stock rom or perhaps the AOKP rom, milestone 6. Is there any way to do this if I can't boot it into a state where I can access the SD card on my pc? All the guides I've found always require I put files on the sd card to flash in clockwork recovery mod. Thanks for any assistance
Edit: Solved it myself, feel free to delete this post. Thanks!
Today my phone was bring finnicky and locking up, so I restarted it. Lo and behold the thing won't even boot. I don't even get a boot animation. I get a flash of LG for half a second and then blackness. Couldn't boot into recovery, so instead I booted into download mode and LGNPST back to JB stock. Now it won't boot past the AT&T logo. I see LG, AT&T, hear the little jingle, and then the screen stays the same. When I power the phone off it auto powers itself back up and tries to boot again. Endless cycle.
Anyone have any idea what's going on or how to fix it? I'm lost at this point and fear that I may have inadvertently bricked my phone. Really can't afford a new one...
You could try factory reset from stock recovery. The button combo is volume down plus power. There will be a menu screen if you get it to work.
Went in to AT&T support and that's what the guy did. It worked. Thanks, wish I had seen this post before making that drive.
I rooted my phone without any trouble for months, and its been working just fine, until now! Then, I had to do a factory reset. The normal procedure, SETTINGS> PRIVACY> factory reset. The phone then never got past the boot logo. It starts to load, and just gets stuck at the Samsung logo, and nothing else. there's two lights glowing from the capacitive buttons, and that's all. I'm on 4.1.2 JB stock rom. Later, I tried to enter recovery mode, and did a wipe, and cleaned cache partition also. AND, the phone just sprung to life, the whole first time set up thing. I started filling in stuff and the phone just shut down again, and if I tried to reboot again, it doesn't get past boot logo. But if I wipe n do it, it happens but shuts down immediately Please help!!
Sent from my GT-I9003 using xda app-developers app
Boot into download mode, get a stock rom from Samfirmware, flash it with Odin (How ? Thread stickied near top of Q&A).
Hey everyone! Big problem..
I have installed CM12, Android 5.1 it's been all fine up until now, I was planning on selling the phone, so I factory reset it, that went well until it tried to turn itself back on afterwards.
My Samsung Galaxy S3 i9300t is stuck in a bootloop. I can not do absolutely anything.
I've tried taking the battery out, holding the three buttons, putting it back in, doing that with a USB, As soon as I turn it on, holding buttons or not it goes straight into a bootloop. I can't use odin to install the custom firmware again as I can't get into recovery or download mode or anything, once it's in the boot loop it stays there..
Any help is appreciated.
Bump?
Ok, so one night I was using my phone normally (Browsing. Watching YouTube, Playing Games) like everyone else does. Then all of a sudden it shuts off, but immediately turns on again without me pressing a button. (So basically it suddenly auto restarts on its own) This occured maybe 2-4 times (all in one night) until one time, it shuts off but doesn't turn on again (basically an automatic shutdown), so I tried turning it on again (Power button), then I got shocked because all of a sudden it enters a boot loop (Screen displaying this sequence : Samsung Galaxy S4 screen, my carrier logo screen, The encrypted screen (where you have to enter your encryption password) then again the Samsung logo but this time with the colors splashing from the background, then it shuts off again.) Sometimes after the boot loop sequence, it vibrates but never turns on again, sometimes it just turns off after the sequence. And as I try and try to get away from the boot loop, the sequence became shorter. So I'm guessing it's a battery problem, BUT my battery isn't bloated or deformed. I tried clearing the cache first, again the sequence got shorter (never going up to the carrier logo screen), then I tried formatting the data, still to no avail. Now, when I turn it on, It shows the Samsung logo screen for 2 seconds and shuts down.
I tried flashing it with ODIN thru Download mode BUT (HERE'S where another problem occured) :
My phone never get pass on the system.img.ext4 dialogue and my screen just goes blank. But ODIN still recognizes my phone. And when I remove the USB cable, ODIN says FAIL.
I'm sure the cable is working. I downloaded the firmware for my carrier (Tre 3).
What could be the real problem here?
Here is the description of my device :
Samsung Galaxy GT-I9505
Bought from Italy, Tre 3 carrier
Can I download a different region/carrier for my I9505 phone?
Advanced thanks for anyone who comments and I'm very sorry for my English. Thanks!
I would install TWRP recovery, boot to it, and use it to format data, which will remove the encryption. Then I would either push a rom to the phone via recovery or try to reinstall the stock firmware with Odin. Make sure that you run Odin as admin as well. The firmware must be the same version or newer. If you still have the stock recovery and can boot to it, then I think the build number of the currently installed firmware will be visible there. You should be able to use that to Google the correct version you need.
Hey it's me. Just posting a quick reply.
Thanks for replying to my post. Yesterday I successfully flash a rom to my GT-I9505 (Version 5.0.1 Italy HUI 3G). However it still didn't boot up. At first try it booted up to the first setup screen then just randomly shuts down. Then as I try to boot it up again, It just shuts down after the first Samsung logo (with the GT-I9505 logo), I can't boot into recovery cause it shuts down. I'm sure it's not a battery issue cause when I boot into download mode, it can stay in that screen for like 10 minutes. What could be the issue? I'm planning to disassemble my S4 sooner to see if something's wrong inside. Thanks again for the reply