IP-Box could crack 4 digit passcode, what about 6 digit passcode??? All you need to do is to upgrade your iOS to iOS9, and you could use 6 digit passcode to make your iPhone more secure. The latest version of iOS is 9.0.1.
Look at the screen and you will see 6 digit passcode input box.
Secure your iPhone with 6 digit passcode by upgrading to iOS9
原文：http://www.cnblogs.com/pieces0310/p/4840970.html