Is Sprint a GSM or CDMA network?

When the new iPhone comes out this year, i will purchase this no matter what. I'm with Verizon and am not a happy camper. I want to switch to Sprint. My only question about Sprint is…
Is sprint a GSM or CDMA network?

CDMA

Sprint utilizes GSM/UMTS and is currently deploying a massive upgrade to CDMA/LTE via Alcatel-Lucent equipment. A typical Sprint cell site is now being upgraded to a 800 mhz + twin 1900 mhz radios per sector, all joined with Hybriflex fiber optic cable.

Sprint is a CDMA provider.

Can iphone 4s in cdma sprint be changed to gsm

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  • Verizon iPhone 5 comes gsm unlocked so if the esn is bad can you still use gsm? I was wondering sense the iPhone 5 for Verizon come GSM unlocked, if the ESN is bad can it still be used with GSM networks? Please let me know thanks
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  • Is Virgin Mobile UK GSM or CDMA and Can I Buy an iPhone 5s with it Unlocked UK? I Know te New iPhone 5s is coming out and I wan to get it unlocked in UK but I have a Virgin Mobile sim and People Said that I can't use Virgin Mobil because its CDMA and iPhone 5s Unlocked from Apple store is Only for GSM so I Want to know if Its GSM or CDMA an if I can Buy an iPhone 5s with it or not?