Did you order the SIM card from RW or from Amazon?
If you go to this page
Top Android Smartphones, payment plans optional | Republic Wireless
and punch in your zip code it will show you a list of phones compatible with the coverage in your area.
If this is the full list of phones…then you have good GSM coverage…if it omits the list of phones that are
GSM only…then you don’t have good GSM coverage in your area.
Unless you are considering returning the SIM card if the coverage isn’t good… I think going through with activation
is perhaps the most sure-shot way of verifying the coverage in your area. With the 14-day Money Back Guarantee
if you cancel service within that time, you will be refunded any plan fees you are charged at activation. The SIM card does deactivate once you cancel service and so is not returnable.