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  1. temoore's Avatar
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       #1  
    Short of trying a different SIM, is there any way to verify that the phone is unlocked? Originally unlocked, and after several firmware upgrades, want to check before heading to Mexico w/ prepaid SIM.
  2. #2  
    Firmware upgrades don't change the unlocked status. I don't know of another way to check besides trying a SIM from a different provider. Go to a phone store and ask them to lend you a SIM. The sales people are usually pretty friendly about it.
  3. #3  
    Firmware upgrades will NOT and NEVER WILL unlock a phone. The ONLY way to truly test to see if a phone is unlocked is to put a SIM that is different than the branding on the phone. So if your phone is Cingular branded, put in a Tmobile or an old ATT SIM in. Its that simple

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