B. Diddy Senior Ambassador Moderator Mar 9, 2012 165,587 4,728 113 Visit site Jul 10, 2015 #2 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. Upvote 0 Downvote
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.