iPhone 6 won't work without wifi
HI got my iPhone 6 about 3 months ago and it as working perfectly fine but all of a sudden it wouldn't let me use the Internet, iMessage or my social media apps without wifi. My brothers and dad's phone still works fine but I don't get how come mine doesn't. I updated my phone to the iOS 8.1 after two weeks I got it and then I updated it to the iOS 8.2 two weeks ago to see if it will work fine again but it didn't. I don't know if the problem is because I updated it the first time but I'm tried and it's annoying. Help please ! I'm leaving on a trip in a couple weeks and I would like to use my phone without any problems.
iPhone 6, iOS 8.2