Why can't I update my iphone 3 to IOS 7.0?

[iMore Question]

I am trying to activate my Facebook and Twitter access from my iphone 3 but when I go to retrieve updated software I receive a message that the software is updated IOS 6.1.6. Facebook and Twitter seem to require IOS 7.0 or greater.

 

[Just_Me_D]

Unless your device can be updated to the iOS version you mentioned, you will not be able to use either app. Period.