1. AC Question's Avatar
    this is after i changed the sim card
    07-10-2015 07:47 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Perhaps the SIM card you changed to had a security password placed on it by someone else. Or you could try a default, like "0000." If you continue to have problems, contact your carrier.
    07-10-2015 04:22 PM

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