I only used/bought a pay-as-you-go phone thru them to facilitate being in contact while settling my father's estate in America. Without it, all calls/txt to my UK mobile (while in USA) would have been at international rates. Sorry, I can't help you more.
They do not do total wireless
I'm not sure either, I'd call them and ask.
No idea.. if I had to guess it would be no.
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