I'd like to turn off the SIM, short of removing it. Is this possible? Zen8 is great but Oh My Goodness I miss my BlackBerry. Tasks like this and the flexibility on look n feel n usage generally c onferred by the BB10 OS was unmatched.
Brilliant! Thank you. Turned on Airplane, turned WiFi back on (it was greyed out but accepted the switch) and within a few moments got the WiFi Calling symbol across the top banner. Was able to make and receive calls even though SIM turned off. Which was the point of the experiment.