Samsung Galaxy smartphone was messing up. I brought it to the workshop with a request to evaluate: it needs to be repaired or it is necessary to buy another phone.
The master looked at it, said that the phone was working properly, but it needed to be reprogrammed (as I understood it). After my permission to lose information in the phone, I set up the phone very quickly and refused to take payment for the work. The phone is working well. Many thanks to the excellent specialist.