your mi mix 3 5g 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 mix 3 5g mobile charging port work properly. condensation can into the port and seep cause rust and damage to your mi mix 3 5g mobile. we can help you with mi mix 3 5g mobile repairs. you should try a few simple troubleshooting tasks to be sure that professional mi mix 3 5g mobile repair is what you need.