My friend gave me a iPhone 5 which was previously with sprint. Is it possible to use it on the Verizon Network ?
Flashing or unlocking ?
No. The system won't recognize it.
but the Verizon iPhone which comes unlocked can be used with other services. why cant a CDMA phone be used on the verizon network.
It is unlocked for the GSM networks, not CDMA.
But still can not be used on a GSM service in the US. Same for ATT iPhones, unlocked for CDMA, but not for US cell companies
It's not a technical limitation of the phone itself. Verizon Wireless won't allow phones that have outside ESNs to be used on its network.
Feel free to try this VZW site to see if by chance they will allow the device
http://www.verizonwireless.com/b2c/estore/certifieddevice/cd