Data on my iPhone isn't working?

I tried a network setting reset and a hard reset I triple checked to see if I had actually purchased data and I did. I have cellular data turned on, lte turned on, etc. It still isn't working. I called AT&T and they said everything is fine on their side.
i don't know what else to do.

Are you sure that model iPhone WORKS on AT&T? Some iPhones are incompatible with the AT&T frequencies.

When I turn my data on it doesn't work

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  • Why isn't my cellular data working? I have an unlocked and jailbroken iPhone 4S. I know where the cellular data is at but when I turn it on it doesn't work, & it even says 3G on the corner but I don't know why it's not working! Can someone help?
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