If your phone does not connect to the computer, when the charger is plugged in, the charge indicator «jumps» or the plug just stops firmly entering the power connector, then you need to change or clean the power connector of the phone.
Often dirt penetrates into the connector, which prevents proper contact of the cable with the laptop system board.
In this case, we can clean it from dirt and reestablish the phone.
In some cases, a complete replacement of the connector is required, since the contacts within the connector itself are damaged.

Prices for cleaning and replacement are given below