Why did my screen go unresponsive after charging overnight?

[ardian_angle]

I purchased an ATT Galaxy S7 in August 2016. I have changed the screen on it myself twice, once in November 2016 and the other last month February 2017. For a couple of weeks before the incident occured, I had noticed the phone would get exceedingly hot while charging. Fast forward to last week, I left my phone charging overnight (as i usually do) and the next morning the screen was unresponsive, no notifications could be heard either. The only thing visible was a constant green notification light. i tried all the different button combinations (soft reboot hard reboot etc.) from various online sources, but none of them worked - screen remained unresponsive and green light stayed on. Later that day, as a last resort, I decided to remove the back cover and disconnect / reconnect the battery. Even that did not work as I was still not able to get it to turn on, the only difference I noticed was that the green light came off and has not come back on since, not even while it's charging. Soon after, Icharged it for a good 10 mins and tried the same button combinations as before but nothing happened. I cant figure what else to do. I have insurance through att, but I want to exhaust all other possible fixes before I go that route because if i do file a claim, I will not have insurance for a year (due to filing a claim on the phone I had previously last year). Also I have a lot of pics and documents etc. on the device itself that I would like to keep. Are there any other fixes I could try? Thanks in advance.

 

[B. Diddy]

Welcome to Android Central! It might just be battery failure, so if only the battery needs to be replaced, then you might not lose your data. If you actually opened up the phone, have you considered replacing the battery yourself? (Also, does opening the phone up yourself void your insurance?)

You weren't backing up the photos to Google Photos, or some other cloud service? Or were any of the files saved to the SD card instead of Internal Storage?

 

[ardian_angle]

I saved some of my pics to my SD card, but I have a good amount that are saved on the internal storage of teh phone itself. And, I'm not sure if my insurance is voided (hope not), but I think I'll try replacing the battery myself and see if that works, than kyou so much I appreciate the advice!