Pix offers two wireless technologies: GSM and CDMA. GSM service requires the use of a Pix GSM SIM card and an AT&T or unlocked GSM phone. CDMA service requires the use of a CDMA Sprint phone/device.
GSM stands for Global System for Mobile communications. GSM phones require the use of a SIM card. With Pix Wireless, you can bring your own AT&T or unlocked GSM phone and purchase a Pix GSM SIM card. A Pix SIM card can be switched from phone to phone, making the new phone receive all calls to the subscriber's number.
GSM is estimated to cover 80% of the global mobile market, and is used by over 3 billion people across more than 212 countries and territories. The worldwide GSM standard has been an advantage to consumers (who benefit from the ability to roam and switch carriers without switching phones). Pix Wireless GSM SIM cards currently operate in the US only and International roaming is not available at this time.
CDMA stands for Code Division Multiple Access- A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology that operates in the 800MHz band and 1.9GHz PCS band. CDMA phones are noted for their call quality.
CDMA phones require programming of the Mobile Number (MDN) along with other network information to operate properly. You will be given instructions for programming this information during the activation process. With CDMA technology, the Network matches the ESN (Electronic Serial Number) and the information programmed into the phone (MDN) to authorize the phone on the Network.