If you use a smartphone for work and you don't have access to a dual-SIM handset, this usually means carrying two phones around. A new device aims to provide a simple alternative: Piece is an adapter ...

Dual-SIM phones allow you to easily manage (and make or receive calls on) two numbers on a single handset. This means you can juggle a work and a personal contact without switching devices, have ...

An old joke holds that anyone with two mobile phones is either dealing drugs or having an affair – but in fact, there are plenty of legitimate reasons why you’d want to maintain two separate numbers.