Swapping 3G SIM with non-3G SIM

Will a 3G SIM work in non-3G phone, and vice versa, or will different
speeds and architectures not allow this?

All I want to do is be able to make and receive calls. I don't care
about media, browsing, email, etc

I've got two phones that I'd like to switch chips with each other.

On 19 Apr 2007 08:47:02 -0700, Boris <boris-badenough@excite.com>
wrote:

>Will a 3G SIM work in non-3G phone, and vice versa, or will different
>speeds and architectures not allow this?
>
>All I want to do is be able to make and receive calls. I don't care
>about media, browsing, email, etc
>
>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.

karlkrandall@sbcglobal.net wrote:
> On 19 Apr 2007 08:47:02 -0700, Boris <boris-badenough@excite.com>
> wrote:
>
>> Will a 3G SIM work in non-3G phone, and vice versa, or will different
>> speeds and architectures not allow this?
>>
>> All I want to do is be able to make and receive calls. I don't care
>> about media, browsing, email, etc
>>
>> 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.

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.