1. Encounters disconnection/frequent reboot problems? 1,First replace the data cable - to rule out cable problems. 2,Please reset the box to factory settings 3, Need to update the firmware version, please con-tact us on Amazon for support 2.No network after inserting SIM card? Please con-tact us for support,update to version 24-05-20 or later can be resolved. 3.Screen freezes or black screen after inserting SIM card？ 1,Remove the SIM card and insert it into your mobile phone, delete the PIN code and insert it into the box. 2,Now delete the PIN code in the phone settings - Mobile network - SIM card number - SIM card PIN code - Off. 4.Box can't connect or can't be recognised? 1, Deletes the Carplay connection record, or the car restores the factory settings 2, Replace the data cable, use your own data cable instead of ours, try it. 3, If it still doesn't work, please con-tact us on Amazon for support. 5.Runs slow/lag when watch watching video ? 1,Check that your network is in good condition 2,Please open Settings - Original Settings - turn the Video Definition down