Want to use two networks or numbers with one cellphone, but don’t want to start slicing up your SIM cards? Here’s another solution: The Ghost Dual SIM is a connector that lets you attach two SIM cards to a single slot via its own “ghost” card. At £9.99 with models for many popular phones, it could be worth a try — especially if you don’t have a steady hand with that X-Acto.

http://www.fonefunshop.co.uk/dualsim/dualsimcovers.htm