My Lumia 550 is hanging on unlocking the screen and only displays "Resuming"

[Windows Central Question]

I bought the phone in April 2016 and have had the Mother Board changed after i damaged the SIM port. This is when the "Resuming" problem started.

 

[Maurizio Troso]

I bought the phone in April 2016 and have had the Mother Board changed after i damaged the SIM port. This is when the "Resuming" problem started.

Start with a simple soft reset (hold vol down + power 15 secs)

If not enough, make a backup and restore your phone via pc and WDRT or via Settings -> Info -> More

 

[IJPI]

My friends 550 was like that brand new.Store send phone to microsoft 2 times and both times it came back with same failure.Allways resuming he asked money back and bought some cheap alcatel android phone.