This article will explain what CDMA roaming mode is and how to turn it off on your Androidphone.
Your smartphone is designed to enter global roaming mode automatically when you activate your carrier’s Worldwide service. This means your device should automatically connect to an appropriate CDMA network or GSM/UMTS network when you travel.
CDMA stands for Code Division Multiple Access, and it describes the way data is converted into radio waves that are transmitted and received by CDMA handsets. Those CDMA devices that have SIM cards are called global phones, and they’re the ones that will offer roaming support in GSM markets.
When dealing with your carrier, roaming is a term you often hear, especially when wondering why it costs so much. However, roaming is a term used to describe the ability of phones to connect to the network of a different carrier, abroad or at home, to offer users the same features they use while on their “home” network – making and receiving calls and text messages and surfing the web.