SIM card read/write [was Re: SIM Card Copy]

Ian Darwin ian at
Tue Nov 27 23:08:39 CET 2007

> However, it would be nice if you could just put a sim card into the
> Neo (or other OpenMoko) phone, select "copy sim to softsim" from the
> menu, and have a software copy of the sim available in the phone.
> Then you could change back to another physical sim card, and you would
> have dual sim capability in the phone without the need for any extra
> hardware at all.

Be careful what you wish for :-) The physical SIM serves as an authentication
token, which is why they are made difficult to copy. If you lose a phone
(or an SD card) with a copy of your SIM credentials, anybody finding it can
make phone calls at your expense, and (at least in the case of the SD card)
you might not notice the loss until this problem had become very expensive.
And don't look for a freefund -- I doubt that any carrier would be at all
sympathetic to *this* sob story!

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