Had mine 4 months and its been in twice now and each time they have replaced charging port and USB sub. So annoyed and hoping 3rd time lucky and I don't need it again
I am having the same problem and also only 4 months old. Samsung are saying they wont repair under warrenty because i have a scratch on the front of my phone therefore warrenty invalid. To say i am annoyed is an understatement. Will be cheaper to buy a new phone for the price they want to charge (the privce i was quoted was the minimum it would be), needless to say iwill not be buying another samsung
While the phone is on, press volume down and power button for 10seconds till the phone restarts. I think this works.
Update: I change sides of the cable (because my A70 is in to type-c in two sides) the charger side put on phone and the phone side put on charger and I do the restart with buttons when I unplug from charging 2 or 3 times till the notification do not show anymore.
ps. Sorry for my english, hope you understand.