iTunes Store on iPhone can't preview any song or movie trailer
Hello. I'm new iPhone customer. I'm impressed about the device, however I have a problem with iTunes Store on iPhone. Whenever I try to preview a song or a movie trailer nothing happens except rotating circle for about 1 second. And that's it. I tried reset (holding Home+Power), but it didn't solve my issue. Also, I can say that when I click on Software Update there's a info 'Unable to Check for Update'. Maybe this two problems are linked? Maybe there was something wrong during the update? I'm on iOS 7.1.1. Please help me as I don't want to buy any song or rent a movie without preview before.
Thank you,
Matt
iPhone 5, iOS 7.1.1