> I mean Sprint was strictly CDMA, so that would be an issue on it's own.
How so? Sprint operated 4G LTE, which is a GSM technology (or alternatively, unified the two, depending on how you look at it).
How so? Sprint operated 4G LTE, which is a GSM technology (or alternatively, unified the two, depending on how you look at it).
This is why Sprint and Verizon used whitelists: they literally couldn't accept GSM-only devices because you wouldn't be able to make a phone call (the phone would try UMTS but only the non-supported CDMA2000 can be used to actually call, so in turn no phone calls).
Sprint went further by using the CDMA provisioning system on top of LTE instead of just using SIM cards and 3GPP provisioning like most GSM and CDMA carriers. This was a nightmare for custom ROM users like me as custom ROMs were designed for GSM carriers in mind and Sprint was at best an afterthought.
That's when the salesman told me to leave.