Blue downloading screen, now phone is stuffing up

[AC Question]

I had a blue screen come up that says " downloading, do not turn of target". I managed to get it off by pressing all the buttons At once but it just happened again, my phone won't fast charge anymore and my phone its running very slow. I have a galaxy s6 that is just over a year old.

 

[Golfdriver97]

Welcome to the forums. The screen you saw was for flashing a ROM to your phone. Since it wasn't connected, there shouldn't have been anything added.

I would suggest a factory reset. That will clear all of the data on the device, so do a backup of all important files.

Did you install any new apps recently?