Secure your iPhone with strong yet easy to enter passcode

You have three choices for securing your iPhone:

1. No passcode

2. A simple, four-digit passcode

3. A longer passcode for added security

The last option is obviously your best option if security is of the utmost concern, but entering a long passcode on the alphanumeric keyboard can be laborious. Unless... you choose only numbers.

(Credit: Screenshot by Matt Elliott/CNET)

If you create a long passcode that consists of only numbers, your iPhone will give you the numeric keyboard, which has fewer and larger keys than the alphanumeric keyboard.

(Credit: Screenshot by Matt Elliott/CNET)

To set a longer passcode, go to Settings > General > Passcode Lock. Next, turn Simple Passcode to Off and tap Turn Passcode On at the top of the display (if you aren't already using a passcode). Enter a passcode of any length and the next time you go to unlock your phone, you'll be able to enter your passcode with the numeric keyboard.

(Via LifeHacker)

Source : http://howto.cnet.com//8301-11310_39-57445108-285/secure-your-iphone-with-strong-yet-easy-to-enter-passcode/