>Will a 3G SIM work in non-3G phone, and vice versa, or will different
>speeds and architectures not allow this?
[quoted text clipped - 3 lines]
>
>I've got two phones that I'd like to switch chips with each other.
The only difference is the letters 3G painted on the front.
SMS - 20 Apr 2007 10:57 GMT
>> Will a 3G SIM work in non-3G phone, and vice versa, or will different
>> speeds and architectures not allow this?
[quoted text clipped - 5 lines]
>
> The only difference is the letters 3G painted on the front.
Well not really, but a non-3G SIM will work in a 3G or non-3G phone (you
won't get 3G in a 3G phone with a non-3G SIM. Similarly, a 2G or 2.5G
SIM will work in a 3G phone, you just won't get 3G data speeds.
I did see something that stated that there were some issues with the HTC
phones where you couldn't use a non-3G SIM, but it wasn't clear if this
was because the handset wasn't really unlocked, or if it really required
a 3G SIM.