For those who are not satisfied with the four digit passcodes (for security) for unlocking their iPhone as it is not fool-proof enough, now you can make your iPhone much securer using alpha-numeric passcode provided by Apple’s iPhone configuration utility.
You just need follow some steps given below to setup the passcode and then your iPhone or iPod Touch will have a fool-poof security.
How you setup more secure passcode for iPhone or iPod Touch?

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