one
You need to buy a car WIFI router in the 4S shop, use it as a car WIFI hotspot, and there is a charging interface on the router that can be connected to the cigarette lighter.
two
Apply for a 3G wireless network card in the mobile or telecom business hall, and insert the network card in the 3G network card jack of the router.
three
Open the mobile phone WIFI, search the signal on your mobile phone, generally the router is encrypted, you can find the initial password on the manual.
four
Now the mobile phone can use WIFI normally, and the car WIFI will be installed successfully.