You can look in the settings on the phone to see which app has used the most date, then if you don't need that app using data when away from wifi, you can turn off access to mobile data by each app.
Settings >mobile data and scroll down to see usage and slide the slider to the off position against the app you don't want using data.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
