Have the router now some days with a ZTE MF 180 USB Stick at bob (Ö) in use. Works fine since the beginning. A small downside was that Bob was not pre-installed on the router. There were only A1, T-Mobile and Orange to find. Have the access data entered manually (APN: bob.at, dial-in number: * 99 #). The remaining wireless security settings are the same as with any other router. Daily operation completely smoothly. Router switch and pin is recognized and dials automatically.