I've used all varieties of gv, with att,vzw, sprint, and now cricket. I can't recall ever having an issue, other than minor outages. Just go to settings menu,replace original vm number with the one...
I bought an extender because reception in the far part of my house, both voice and texting, was really bad. Now that the extender is here, everything works great at the far end of the property.
At home in Gary (Black Oak), my phone (Samsung Galaxy Note 3), it only picks up Band 13. in Griffith, it picks up both via LTE Discovery, but the phone usually defaults to Band 4.
All the sim carriers are credit card size, at least mini and micro. Google a pic of the one you need. Adapters are devices to mess up your phone.
Crawled at 5 Mbps down?
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