Clarification on whether ATT or Sprint in 72802
I checked coverage map but it didn't indicate which provider is used. Per Whistleout if ATT is used it is VOIP not mobile digital, but if Sprint is used it's CDMA digital. I'm concerned about voice not data for a hearing impaired person. VOIP has been problematic for amplified and tone adjusted services where mobile calls (haven't tested specifically on Sprint) work. Before I sign up a person to another service how can I find out a) sprint or att b) can I force to sprint only by the phone I purchase c) if att only is it voip only or is whistle info incorrect? Thanks.