A 5G router allows you to set up a fast internet connection. 5G routers with a SIM card use the mobile network for a wireless internet connection. This mobile data connection provides download speeds which are 10 to 20 times faster than a 4G internet connection. You can use mobile 5G routers in places without wired internet when you're on the go, like a camping. 5G routers are also suitable for in home, because you can create a backup connection when your wired connection stops working.