My Phone seems that its in a coma

A

AC Question

Ok guys lets begin with the begginng(Sorry for bad english..)

So i was watching some movies on my phone and i notice that 2 movies in a row my battery percentage was 55% after the first quarter of the 3rd movie my phone shut down.I knew that my phone bugged so i got the charger and plugged in.After 10 minutes i came back to check my phone and the red led was flickering and on the screen appeared my battery empty and i let it all night charging.I usually dont sleep night so i played some LoL on my pc while the phone was charging and i wanted to check and the phone remain the same and i cant do anything to it..I tried to hold the power button 20 seconds but it displays the same behaviour.I tried replacing the battery but nothing changed.. Does warranty applies this sort of thing?
Also if u have a solve tell me pls (Btw my phone is Huawei Y6 and i bought it 6 months ago and i had no problem until now