Most people have mobile phones. They are now very advanced, offering internet, email, games and lots of other handy apps. They're also smaller and lighter, which can make them easy to lose.
Because mobile devices can now do almost everything a home computer can, they are vulnerable to the same risks.
Nuisance text messages have been around for a few years. Mostly they are just annoying, but a scam known as 'smishing' attempts to steal your personal information or dupe you into a very expensive, useless service. The most common way is a text along the lines of "you've signed up for our service, costing £X a day. To cancel, go to this website www.xyz.com"
Sharing technology like Bluetooth can also put your personal information at risk if you don't set who can 'see' your phone.