How to check your mobile data usage on an iPhone Discover which iPhone apps and services are using mobile data Turn off iPhone apps to stop them using up your mobile data allowance The iPhone is a fantastic tool for accessing the internet on the move. It makes it all-to-easy to browse websites, check email, and even stream video on the move. Nothing is free, however, and all of this uses up mobile internet data. Measured in MB (megabytes) and GB (gigabytes, which are 1024MB) your mobile internet data allowance keeps tabs on how much internet you are using. See: Apple Support: understanding cellular data. It used to be that most iPhones came with free unlimited data ac
