The problem with Bluetooth is that it cannot find the phone and connect to it when the car is started.
When I try to connect my phone it says that the Bluetooth version is old and needs to be updated, and when I try to update Bluetooth it says that I have the latest version.
The problem with the SIM card is that even though the signal shows that it is full, it cannot connect to the internet, the card is 5G with 100MB speed.
DUDU 7 12ram/256gb