This is an interesting and low cost device for those who need to do backups of up to 3 SIM Cards. I don’t think I would ever use one as I sync through iSync.
My SIM card goes pretty unused (things are stored on the phone itself) other than network identification for T–Mobile. What would be cool would be a way to write the data out to another SIM card so you would not have to do a SIM swap if you used multiple phones and wanted to maintain the same data and same number.
I’ve only found one service – in the UK of course that lets you have more than one SIM with the same number.
If you don’t have a way of syncing the data on your phone with a PC or PDA, this could be a good option for you. [The Gadgets Weblog]