Many CDMA models are never unlocked. You pick a carrier and that's what it works with. Pick another carrier and they move it to their network. It's not as easy as the GSM systems I've used.
There are now SIMs for CDMA but that limits my choice of phones. So I'm back to GSM only.
I'm looking to buy an unlocked phone to use on Sprint. Do I have to be concerned with GSM and CDMA and factory vs network unlock?

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