3G sim cards

Eric Johnson eric at ebj.us
Fri Jul 27 07:31:42 CEST 2007

Harrison Metzger wrote:
> Is there any way to make a 3G sim card work in the device (even if it 
> does 2.5g)?
Since the Calypso chipset is 2G a "3G SIM" will only work if it contains 
both the USIM and SIM applications.
I would expect that this is the case for most operators that  have both 
2G and 3G networks.
It is less likely that operators such as 3 would put a SIM application 
on their cards - at least I can't think why they would - since this 
would only be used by a 2G handset which couldn't use their network.

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