If I buy an unlocked phone (unlocked from mfr., never sold to a provider), will I be able to use all of the TMTG features (for example the T-Zones that I've read about)? Or is that interface in the carrier-specific firmware?? If I'd be "locked out," what other features (if any) would I miss out on? (TMTG has very few "extras," right?)

Many thanks for the help.

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