Does Xfinity Mobile Use Gsm Or Cdma. CDMA cell phones sometimes have the sim-card built in to them but it all depends on the age and brand on the phone. Up to 300 cash back Phones without a SIM card are called CDMA phones and switching these devices to a new carrier may be more difficult.

Judging from the article itself it sounds like Verizon is preemptively taking actions to reduce and eventually remove order devicestechnology from the network. The main difference is that a GSM phone will usually need a sim-card to be inserted to connect to the network. As of now Xfinity Mobile XM has not released any official correspondence relating to this matter.
CDMA and GSM are the two technologies used in cell phones and help fill in the gap when 4G is not available.
As Sprint has now merged with T-Mobile the main carrier using the CDMA Code Division Multiple Access network is Verizon. Does Xfinity Mobile use CDMA or GSM. Many of the remainder of the world makes use of GSM. If you have an older device that is only equipped with GSM technology it will never work well on CDMA networks like Verizon or Sprint even if its an unlocked phoneIf you have a phone thats CDMA only then it wont work well on GSM networks like ATT and T-Mobile.

