The No-Cut Dual SIM Socket lets you run two SIM cards in your mobile phone at the same time. With the old types, you had to cut your SIM card up in order to insert them, but this model lets you insert your whole card which is pretty neat. From the installation instructions it looks as though you put one SIM under and one over the top of the battery to fit the thing in. It seems to be compatible with a fair amount of handsets, although the company states categorically that it won’t work with USIM 3G cards. £9.95.
Dual sim holder with Ultra Slim design , no need to cut the SIM cards, install in minutes. One Model suitable for almost all GSM mobile phones. The Dual sim holder does not require power off to switch between numbers. Software on the dual sim shows onscreen Sim1 , Sim2 display. Enjoy the freedom of two mobile numbers in one handset! Now you can take advantage of different networks offers allowing you the freedom of both contract & pay as you go deals with only one handset. installation of the dual sim holder requires space within the case to house the second sim card.