Unlocked Cell Phones Versus Phone Networks
CDMA and GSM are two major communication systems used for cell phones. CDMA is a coded response system that ties a phone and its user together to a particular system and to a particular number. CDMA is more popular in the United States.Both of these systems, although more pronounced in GSM, have the capability to lock your phone if they want it. But of course, we know that we can get away with being locked if we purchase Unlocked Cell Phones. GSM, which stands for the Global System for Mobile Communication, is the common standard in over 200 other countries in the World and is becoming more popular in the United States. GSM cell phone uses a SIM card to communicate with a particular network. The network provider has the ability to lock the phone so that it will not respond to a SIM card from an alternate provider. Network providers do this obviously for competitive purposes, but many have cried foul over this seemingly unfair practice. When the cell phone is purchased by an individual, he should have the ability to change the SIM card and use the unit on any network that he prefers to use. This gives him the power to use the same phone when traveling, especially in foreign countries without paying expensive roaming charges.