Jan 22, 2016
Hi, I currently own a 4 years old galaxy SIII phone. My phone wouldnt get past the galaxy SIII logo, and it only keeps flashing that logo the second I put in the battery. I have searched google for days, but I couldnt find an answer. I had sent my phone to repair, but they told me that it was corroded by water, and it is beyond repair. But the files, photos and notes inside are really important to me. Is there ANY way to get them back?
I did not backup my files, or have an sd card, neither did I debug or root my phone. Please help.
Yep. Unless you had Google Photos backup enabled, the only location of those files was on the phone and it's gone... as are they. I hope that, going forward, you remember to back up your important photos and files on a regular basis. I know that's not the answer you were looking for, but that's the danger of not having a backup. Sorry.
You MIGHT be able to fix this...

This happened to me with the Galaxy Note 4 and as it turns the real problem was the battery and the charging port of the phone. Go into your wireless store and ask them if you can put a FULLY CHARGED Galaxy S3 battery into your phone. You might want to even buy a battery and just return it if this doesn't work.

Act quickly because once the battery is dead, you'll have no way of recharging the battery again (assuming this is really the problem).

Slim chance but it is a possibility.

PS: I've updated the title of your thread to be more descriptive to help other people find it.