I'm Seamus Byrne from CNet with another quick tip on saving mobile data.
Are you automatically backing up the photos on your phone?
It is easy these days with services like Google photos offering unlimited photo back up.
But that is gonna eat up data.
Here's how you adjust the settings to make sure that will only happen when you get back to wi-fi.
Just go to the Settings menu then Backup and sync and then choose where the photos and videos Are backed up using mobile data.