Unlocked Cell Phones: How To Save Money and Have Most Flexibility

Cell phones can be locked using a SIM lock capability built into GSM phones by mobile phone manufacturers. Most network providers (such as AT&T, Vodafone, T-Mobile, and RIL etc) use this capability to restrict the use of these phones to specific countries and network providers. Generally, phones can be locked to accept only SIM cards based on the International Mobile Subscriber Identity.

Cell phones can be locked using a SIM lock capability built into GSM phones by mobile phone manufacturers. Most network providers (such as AT&T, Vodafone, T-Mobile, and RIL etc) use this capability to restrict the use of these phones to specific countries and network providers. Generally, phones can be locked to accept only SIM cards based on the International Mobile Subscriber Identity.
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