Under normal circumstances, the wifi of the mass tachograph is not password by default, the first use can be directly connected, and the connection will prompt you to set the relevant password. If there is a password, it will be indicated in the product manual, and the default password will vary slightly depending on the product, but in general, the initial password will be 12345678, 123456, 1234, 000000, 888888, etc.
When the wifi of the mass driving recorder is not connected, the first choice is to check whether there is a problem with the Settings of the phone, and whether the app is downloaded wrong, the app needs to be downloaded according to the product manual. After checking that there is no problem with the phone and app, check whether the wifi of the tachograph can be found on the phone. If so, check the wifi permission set on the phone.
When it is confirmed that the wifi on the phone is normal or not connected, then it may be the Bluetooth on the car caused interference to the wifi, turn off the Bluetooth to see if it can be connected. If all else fails, try rebooting your phone's wifi or dashcam wifi, or pulling out your memory card and plugging it in.