Welcome to the Community!
Sad to see you're experiencing issues with your data connection.
A couple things to consider.
- Have you checked if your Data is enabled in your Mobile Data settings?
- Did you get a chance to turn the phone off for a few moments and back on?
- Did you receive a text message indicating that you had exceeded the amount of data included in your plan?
Last but not least, if the issue persists can you try resetting your device's Network Settings?
You can do this by going through Settings > General > Reset > Reset Network Settings Only.
Let us know if this helps.