It won't let me update to ios 7 I have an iPhone 4?

Please help really want it

It can be updated to ios7 just go to setting general and then check for updates

Try searching for it on another internet network. There should be no problem with you getting the update as long as your device is compatible. Hope this helped.

All I could suggest is to try again. The iPhone 4 is capable of running iOS 7. Though you aren't giving much details here that may explain why you are getting trouble.