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You're only partially right. The GSM standard requires a SIM, but it doesn't say anywhere that it's required to be a card or that it needs to be removable. The
by jm4 17y ago
You're only partially right. The GSM standard requires a SIM, but it doesn't say anywhere that it's required to be a card or that it needs to be removable. The SIM could just as easily be built into the device.
- blasdel 17y agoYet I've never seen a device in which they aren't removable... Even if it was integral to the device, it would still have to follow the standard interface, and potentially be cloned onto a standard removable one.