sim card: rookie question

can someone explain what a sim card is and does? i recently bought my
first sim card phone; a t610 with t-mobile service. the k700i has
been released. i'd like to get it and give the t610 to my wife. i
have a *fantasy* that all i'd need to do is move the sim card from the
t610 to the k700 and poof, the k700 works, i maintain my current phone
number, service level, etc. (i don't care about preserving the
phonebook. i only have a handful of entries in the t610 right now
anyway.) tia.

4MLA1FN

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4MLA1FN wrote:
> have a *fantasy* that all i'd need to do is move the sim card from the
> t610 to the k700 and poof, the k700 works, i maintain my current phone
> number, service level, etc.

That's the theory, provided both phones work with the same provider,
i.e. none of them is subsidy-locked to another one and they both work on
the same frequency (US standard would be GSM1900).

> i don't care about preserving the phonebook.

Sorry, the phonebook will be "preserved", too. If you have stored it on
the SIM card that is.