My iPhone apps aren't working?

My apps on my iPhone aren't working at all. They were fine during the day. Then I tried later that night and they just stopped working. My Internet and everything else works. When I press the app it looks as if it's going to open then goes back home. I tried restarting my phone and when turned it off all night. I need help.

This has happened to me twice. One time, I was able to solve the problem by shutting off the phone entirely (holding both the top "off" button, and the home button) and restarting it. However, the other time, I had to reinstall the apps (which is a big pain if you have a lot of apps). Sometimes updating the apps can work.

My iPhone 5c apps are not working so I deleted them. Also my itunes is not working on my phone. My phone says its connected to the internet, but it won't connect to any website I try to go on. Can you please help me?

Thank you for those common

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