Share your experience!
I’m new to Sony Xperia phones. My phone would not turn on yesterday, so I tried to charge it, thinking the battery was out. When I plugged it in, it has a red flashing light and a regular, audible buzzing sound.
It’s a few weeks old, in a hone protector case & has a screen protector on
Hi @Amun
Welcome to the community!
Sorry to hear about this 
Do you have an SD card in your handset? If so can you remove this then attempt to turn it on as normal.
Let me know 
try to charge your device using the wallmount adapter for 1-2 hours
then turn on the device by pressing vol down + power button, if it doesnt work
try to perform software repair using Xperia Companion