Galaxy S3 Boot loop and can't enter recovery mode because phone autoboot.

[jpx72]

Hey I have a solution that worked on my S4 after stock firmware installation and without wiping cache +factory reset first, which caused bootloop.
This won't save your data...but will unbrick your phone.
Anyway to get into recovery I pushed VolumeUp+Home+Power; when the blue text appeared "recovery booting" I let go of Power button but kept holding the other two. Phone bootlooped twice (so I held it for maybe 15 sec) and voila - the recovery console! I wiped cache and factory reset and I got out of the bootloop.
Hope somebody can repeat the process.

 

[Banana_man1]

I am having a similar problem. I can't even get it in developer mode so I can do a factory reset and I can't turn on the phone. Also, I have a Samsung galaxy s2 so I don't have a home button to press. PLEASE HELP ME.:'(

 

[BeARK Ventures]

I have the same problem but my phone is a BLU Studio. I recently flashed twrp on my phone and after rebooting it, it started to reboot loop everytime i turn it on. I can't access recovery mainly because its twrp. Now whatever i do i can't do it cuz it would crash and reboot loop again. Help

 

[lizaveralienware13com]

Hey, I'm not sure if you guys have found a solution yet. But I fixed my phone by taking it apart, (cover, battery, six screws, plastic buttons) until I seen the motherboard. I reassembled it and it worked again.

I fixed it the same way (Samsung I9301I Galaxy S3 Neo). I had it restarting all the time and even after a few days with the battery out it would turn on by itself just by inserting the battery. It was also impossible to boot into recovery mode.

After reading the forums I though power button might be to blame and decided to open up the phone to inspect if it's possible to do something about it. I removed all the screws at the back as well as speaker/earphones module. There were no visible screws left and I didn't know what to do. I decided to try inserting the battery to make sure I didn't brick it completely. After inserting the battery the phone would no longer turn on by itself and worked as before.

I have no idea why it worked. My best guess is that there was some kind of conductive dust on the power button so the phone behaved like the button was always pressed.

 

[Mach Seven]

INDEED it seems the power is defective. My solution is: Do what you must do to enter the mode you want to enter (recovery/reset) normally. Then let the POWER button go, but keep holding the other 2 buttons. I've used this trick to enter reset. To enter download mode I've kept holding the home button. Worked like a charm for me.