Tag Archives: Sprint iPhone Sim Unblock Code

How to Unlock Sprint iPhone

There are 3 major cell phone carriers in the United States that use the CDMS network. Verizon, US Cellular and Sprint. When a customer buys an iPhone locked with Sprint network, it uses the CMDA frequency of the Sprint network but the 4 major GSM frequencies in your iPhone are available but dormant.  When you unlock your Sprint iPhone, those 4 GSM frequencies are unlocked. Read More...