Update your Android or anyone can use this trick to unlock it is a komando.com article that talks about a researcher that was out of juice on his phone. After failing to authenticate with his pin,, it asked for another piece of information which is discussed in the article. But when the research continued, he was able to bypass the lock screen by just changing sim cards.
This is great research, and something Android users should read. Steps within the article will giv you info on how to update.
Keep the research coming! It might be a great trick, but not a treat if you lose your phone.
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