You probably already know that the more digits in your passcode, the better, but if you’re still using a four digit passcode, especially on your iOS device, you should probably change it. Here ...

Interestingly, if you put a 4 digit numeric passcode in in the non-simple passcode mechanism, it helpfully switches simple passcode back on for you.

In iOS 9, Apple has added a minor tweak that's aimed at improving the security on your iOS device. Instead of defaulting to let users select a four-digit passcode to unlock a device, Apple will ...