Shenzhen gefei navigation is broken. Where to fix it?

Shenzhen gefei navigation is broken. Go to a 4S shop or garage for repair. Generally, the car navigation is replaced once every three months, and the maintenance is free within one year. Car navigation will inevitably have some faults in use. Some faults can be solved by themselves without going to the repair shop, but for safety reasons. Or go to a 4S shop or a repair shop for repair.