2 questions

What is an unlocked cell phone?
and
As a T-mobile subscriber, do I have to buy only their phones or will my sim
card fit into other phones?

I'm clueless about both these...
pcb

On 2008-12-31, pcb <pcb62 RemoveThis @cox.net> wrote:
> What is an unlocked cell phone?

An unlocked GSM phone is one which will accept a SIM card from
any operator. A SIM-locked GSM phone is one which will only
accept a SIM card from a single operator. In the US phones from
T-Mobile and AT&T are usually sold locked, but can almost always
be unlocked by their owners by calling the carrier (if they ask
why you want it unlocked tell them you'll be travelling overseas
and may want to use a foreign SIM card in the phone).

> As a T-mobile subscriber, do I have to buy only their phones or will my sim
> card fit into other phones?

Your SIM card will work in any unlocked GSM phone.

Dennis Ferguson