[Empedocles99]

The phone leaks password data? It tells an attacker that the password contains only numerics?

[pieter]

Yes. If you have digits only, you get a freetext field, but with the digits only keypad.

Even more fun: if you give a four-digit passcode for the non-simple passcode, it turns on the 'simple passcode' option again, which means that you can't have a four-digit passcode without telling the length of the code.

[foobarbazetc]

http://mindyourdecisions.com/blog/wp-content/uploads/2011/01...

So yes, it "leaks password data". ;)

[mrcharles]

Yes but unlike simple password, it doesn't give away the length, and your numeric password can be as long as you'd like.