XZ1 dual sim not able to turn on - LED diode sometimes blinks green

[Oliver333]

Hello, yesterday I downloaded and made acualization (with no errors) on my Sony Xperia XZ1 dual sim phone (4 months old). During the night was mobile recharged by original rechage adapter. In the morning battery was 100% full, everything was working well. Today I was in my office, phone was on the table not used. During the day I made two short phone calls. Everything was OK. In the afternoon I was not able to turn it on (battery was at least 80%). The phone is dead. I´ve read some articles about this problem (also in this website), I made all possible restarts (also 120s 2 button restart....). Phone was on recharge device at least 30 minutes after that.
What is interesting: during the touching buttons on phone, the LED diode sometimes (may be every 1 minute or so) blinks green for a very short time. Vibration doesnt work. Display is black. If I connect it to the computer (Win 10) - nothing happened, not even PC doesn´t recognize nothing.
What to do with it? It is hardware or softwear problem? I had a lot of photos in it. Is it possible to save them - may be in authorised service?
Thanks
Oliver

[Qatrium · Accepted solution]

@Oliver333

When you charge the phone, does it's LED give any colour?

The usual practice is to leave the phone on a wall charger for 2-3 hours then try starting it, or the power + volume up buttons reset. If this fails to start the phone or if the phone doesn't give any colour indication upon charging, then it can be a hardware failure. At this point, you'll need to contact your Local support and ask for assistance.

According to my experience, service centres will not be able to restore any data for you and will always reset the phone when received for privacy reasons.