AppStore not allowing me to download

Hello all,

I'm hoping someone here will be able to help with this.

My iPhone 5 won't let me download any apps. I go into the appstore find an app (in this case a free app) click the free button, it asks me for my username and password, i enter those, the screen goes away, and then the free button comes back. click it again, and the button just turns back to free. i can't download anything!

I'm able to download on iTunes apps on my laptop using the same login details i am using above, so i know the credentials are correct. these apps i can then sync to my phone, but not actually download from the phone itself.

I've tried resetting the phone. resetting the username and password within settings->itunes and app store.

The phone is running iOS 6.1

Has anyone experienced this? Know a solution?

Tony