iOS has a very good passcode system. You simply need to set a passcode and it’s usually enough to keep almost anyone with your iPhone in their hand out of your personal information. Unfortunately, it’s so good that it’s also secure against a person that forgets their own passcode, which ultimately leads to complications down the line.
iOS developer Gil Ben Moshe
has created a jailbreak tweak called Plan B
, which can be used to regain control of your iOS