Why is the App Store not letting me download free apps?

Related questions

1. Which app category is most popular?
2. How do I get to the app store?
3. Why is my app store disabled?
4. Why do I have to reinstall apps on my iPhone?
5. Why is my phone not downloading apps?
6. Is Appstore down?
7. How do I find a missing app icon on my iPhone?
8. Why does it take so long to download an app?
9. Why my app store is not working?
10. Why can't I download an app from the App Store?

Tags

1. #store
2. #email
3. #update
4. #apple
5. #message
6. #return
7. #verification
8. #seeing
9. #itunes
10. #required
11. #settings
12. #where
13. #install
14. #without
15. #button
16. #choose
17. #download
18. #freely