How do I change my birthday/date of birth on my Apple ID
I've plugged my phone into my laptop and I couldn't change my birthday I tried and looked on the iTunes Store on my phone an on my laptop couldn't find anything I went into settings and got to edit your account and I can't change my birthday/date of birth there were do I change it its getting really frustrating now someone please help!
iPhone 4S, iOS 7.0.3