After I upgraded my modem to a SIM7600 (and replaced my SIM card) I hoped the GSM would be running well again. I'm sorry to say that I still have issues. Every few days GSM will disconnect with "Last Error: User Interrupt". When it disconnects this way it won't connect anymore. Not even when I change location. Only after a "module reset" the connection comes back for another few days. The antenna I use is the internal antenna of the car. I had no issues like this last year. Same antenna then. Am I alone with this behauviour? Any ideas? Thanx Chris cellular status MODEM Status Model: SIM7600 Network Registration: RegisteredHome Provider: congstar Signal: -77 dBm Mode: GSM;Online State: NetLoss Mux: Status up PPP: Not connected Last Error: User Interrupt GPS: Not running module reset cellular status MODEM Status Model: SIM7600 Network Registration: RegisteredHome Provider: congstar Signal: -79 dBm Mode: LTE;Online State: NetMode Mux: Status up PPP: Connected on channel: #2 GPS: Not running