Hey good afternoon I have a xperia xa ultra that am working on and it had shut off .. and is not coming on anymore.. I've tried the power and volume button to see if it would of boot up but didn't come on anyone has a solution
Do you have the XA Ultra or the XA2 Ultra? If the former, this should probably be in the XA forum, not the XA2 Ultra forum, based on the generation of the phone.
Lave it charging on a wall outlet overnight. Then press and hold Power for about 20-30 seconds. If nothing happens, then it could be failure of the battery, Power button, or motherboard. Is the phone still under warranty?