We are migrating towards a MVNO (twilio) that allows for connection to either ATT or T-Mobile on the same SIM. I am curious to know how the peplink will decide which one to connect to, and if that can be controlled through the UI.
I am in a somewhat similar situation, with an AT&T SIM that roams on various providers internationally. I often want to lock the network into a specific provider.
You should be able to select the carrier in the UI. For example, I can select Rogers, Bell & Telus in Canada.
I would imagine your MVNO would decide which carrier to automatically connect to. If your MVNO lets you override it then (1) in UI will let you do it.