Q. I'm a bit confused by jargon - what does 'data' mean?

A. It's a way your network provider measures internet usage on your smartphone. The more data you have, the more time you can spend browsing the web on your phone and the more you can do online. It's measured in megabytes (MB) and gigabytes (GB). Some activities use more data, like watching a video on YouTube or listening to live radio. The data allowance you get depends on your network and ranges from 100MB a month to all-you-can-eat data on Three. Data is used by the internet and apps on your phone. It's not used for texting or making voice calls. Your phone will use approximately:

• 30MB of data for every 10 minutes you spend on Facebook and 2MB to upload a picture.
• 50MB for 10 minutes on YouTube
• 2MB for 30 emails with no attachments
• 300MB if you use your phone for one hour each day in a month to browse the internet
• 8MB for one music download
• 260MB to stream one hour of TV or film.

For info, visit Three.co.uk