Hello! I need some help about my iphone 6.

If i force the frame a little bit ( for example removing the case) my screen move a little bit and the phone shut down. After I force the screen to go inside the frame again it would turn on. That happens to 2-3 times.

After that last time, the phone started to show weird battery % from 5% to 30% and then to 15%. That would not change even in charge.

Then it started to reboot from time to time until it shutdown and never turn on again.

Everytime I connect the charger, the apple logo blinks in the screen but nothing else happen.