Android operating system
Users of Android devices have reportedly been among the worst hit.
It follows an overnight security breach.
It's not as easy as you think.
It probably contains something nasty.
Here's everything you need to know about Chat and when it's arriving in the UK.
Ask a Tech Editor 'How do I stop my phone constantly autocorrecting words?'
Game Of Phones: Treat your commute to this stunning BAFTA award-winning game for iPhone and Android.
This is going to be Pokemon Go all over again.