By: Arthur Cooper
Submitted: 2010-12-16 05:28:03 | Word Count: 664
Many cell phone service
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providers offer deep discounts or even free phone to customers when they sign up for 1 or 2 year contracts. Because they make their money during the life of the contract, these companies take the added step of locking the promotional phone they’ve offered you so that it can only work on their network. They lock the phone with a SIM (Subscriber Identification module) card that can only recognize signals from their specific network (At