Power off your phone, take the SIM card out from the phone and replace it with a SIM card of other carrier. Cellular use CDMA while AT&T and T-Mobile use GSM.( So normally mobile phones bought from Sprint or Verizon are network unlocked.)īefore getting your phone unlocked, please make sure that your phone is really locked: If these sound like your case, then you don't want to miss this post, which is going to explain to you what a SIM lock is and how to unlock your mobile phones for any SIM card in simple methods.Ī SIM lock, simlock, network lock or subsidy lock, whatever you call it, is a restriction imposed by mobile phone manufacturers to GSM mobile phones, which limits the network use of the phone to specific countries or networks. Need to use the mobile phone in a different country. Want to switch to a new network provider before the contract with the original provider is up ![]() Generally, we seldom bother to learn about the words SIM lock, but when we do, it is usually when a SIM lock is bothering us in the following circumstances:
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