your mi 9t mobile charging port refusing to sync when you plug it in, frequent use of the charging port can cause problems. it’s fairly easy to dislodge internal components that make the mi 9t mobile charging port work properly. condensation can into the port and seep cause rust and damage to your mi 9t mobile. we can help you with mi 9t mobile repairs. you should try a few simple troubleshooting tasks to be sure that professional mi 9t mobile repair is what you need.