@kugiigi That's it posted now. https://gitlab.com/ubports/development/core/messaging-app/-/issues/316

Hello all,

I recently had to switch phone networks due to the impending 3G switch-off where I am. Unfortunately, I now can't send or receive MMS messages and, through testing my SIM card on multiple devices, I've found that I need to change the authentication option from 'None' to 'PAP' for MMS to work. I don't know why my network claims that having the authentication off is sufficient, it is not for me. https://help.voxi.co.uk/Joining-and-Set-up/Set-up-Data/1381340962/What-APN-settings-do-I-need-to-use-data.htm

Looking through the Ubuntu Touch source code for this functionality and how it might be enabled, I found an Authentication option in one of the settings modules at https://gitlab.com/ubports/development/core/lomiri-system-settings-cellular/-/blob/main/plugins/cellular/PageApnEditor.qml?ref_type=heads#L362 but I don't know how to make showAllUI true so that I can change the setting as required. Is there a way to do that or a command to run in the terminal to set this option as required?

For clarity, all other cellular functionality works as intended, including SMS, calls, and mobile internet access.