If they are BYOP SIM cards from July, they have to be GSM. You can verify that by opening the Republic App on the phone in question and then clicking the gear and the About and you’ll see “SIM Type” there.
GSM technology was designed to allow activating of SIM cards in any compatible phone. CDMA, not so much. In fact the SIM cards in CDMA phones didn’t exist until 4G LTE came about. Republic has said they’d like to offer direct activation for BYOP CDMA, but it isn’t simple.
See above and some additional info. There isn’t a “CDMA SIM”. Unfortunately, unlike GSM where there is one SIM, different phones when used with Sprint could require a CSIM, ISIM or SIMOTA. So, unlike GSM, Republic would have to know for certain the model phone the SIM is going to be activated in in order to sent the right type of SIM.
It isn’t better or worse, it is exactly the same. THe only thing that likely changed was Republic’s opinion of the GSM service in your area. Based on customer feedback they’ve likely decided the service there isn’t the experience they want to offer and therefore you’re now seeing the message you didn’t see before.
You open a ticket and make the request. Documented here: How to Request a 3.0 CDMA SIM Card – Republic Help