My iPhone Internet won't work without Wi-Fi?

I have the 4s. The Internet doesn't work without Wi-Fi. It always used to but lately the Internet has only been with Wi-Fi. This includes my google app, my YouTube app, and my radio app. And my email!
What should I do? I need it to work without Wi-Fi.

It seems you may have limited all your data to Wi-Fi. Go to your settings, to general, go to network, and turn on cellular data. That should be the solution to your problem there.

In youtube only

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