We do have a troubleshooting page which might be helpful https://tinyurl.com/493yttm7
If you haven’t tried it yet, you could try the following to potentially regain a connection;
- Restarting your device and/or resetting your Network Settings (this does not affect your device storage, apps, pictures, etc.). This will refresh your connection to the serving site, prompting a stronger signal.
- Toggling Airplane Mode/Mobile Data off and on. This essentially resets the IP connection, establishing a fresh new connection once linked to the network – this will prompt your device and SIM to connect to a stronger signal.
- You can remove any saved APN credentials, restart your handset and then re-add the required APN if your device doesn’t seem to automatically connect to a strong network signal – please find guidance on the correct APN set-up via the following link: here