| Symptom | Solution | |---------|----------| | No Cellular option in Settings | Device lacks WWAN hardware or BIOS disabled it. | | Driver installer asks for “GSM Pack” | Download the from OEM site, not a generic pack. | | SIM not detected | Update Modem drivers via Device Manager → Network adapters. | | “GSM pack not installed” from legacy software | Ignore; use Windows built-in cellular stack (Windows 10 version 1607+ fully supports GSM). |