Why is my iphone not connecting to internet outside of Wi-Fi?

Ok. I restricted my internet on my iphone to be used only on Wi-Fi because i was about to go over my covered data. The data renewed so i unrestricted it. However, its like i didn't un restrict it at all. It still works on Wi-Fi but when its outside of Wi-Fi it won't connect. All of the settings is turned on for data to be used. Any ideas what may be going on or wat i could do?

Do you have the data from the company in the first place?
Did you have both the data and the wi-fi on at the same time? That would have used up all your data
Go through your settings again if nothing works take it to your carrier and have them check it matbe they are in error.

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