Hi @Moth3747,
Welcome back! I’m sorry to hear you're experiencing service issues upon your return from Belgium. It’s a common technical "hangover" where the SIM remains stuck searching for a foreign partner network instead of reconnecting to our UK masts.
Since you have already tried toggling automatic connections and verified your payments/data, we need to take more decisive steps to force the SIM to re-authenticate with the Three network (our UK partner).
Troubleshooting Steps
Please perform these steps in the following order:
- Perform a "Hard" Network Refresh:
- Go to Settings > Mobile Data > Network Selection.
- Turn off Automatic.
- Wait for the list to populate (this may take a minute) and manually select a network you cannot use (e.g., EE or O2).
- Your phone will show "No Service." This is intentional as it clears the previous roaming cache.
- Now, manually select iD or Three. Once it connects, switch Automatic back on.
- Toggle Flight Mode (The 60-Second Rule):
- Switch Flight Mode ON for a full 60 seconds, then back OFF. This force-restarts the modem's search for local masts.
- Reset Network Settings:
If the above fails, you may need to reset your network configuration.
- iPhone: Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
- Android: Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth.
Owethu