Hello! So yesterday I was using my S8 in battery saving mode on max, and it dropped to 0%. It finally turned off and a couple of minutes later I plugged it in. As soon as I did, a ring with a little flash up top appeared and I tried turning it on as I always have and it went black. Several minutes later I tried again and the same thing happened. Now it doesn´t turn on, doesn´t appear to be charging and I´m without phone. Can someone help??