How does this work ?

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desgnr - 14 May 2007 15:40 GMT

If i unlock my phone,can i take a Sim card from another carrier ( ex.
T-Mobile ) & put it in my phone & it will work on there service.
Also if my phone is unlocked will it still work on Cingular ?

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Bert Hyman - 14 May 2007 15:44 GMT

> If i unlock my phone,can i take a Sim card from another carrier (
> ex. T-Mobile ) & put it in my phone & it will work on there
> service.

All other things being equal, yes. I'm going to be doing that soon on
an upcoming trip to Norway.

> Also if my phone is unlocked will it still work on Cingular ?

Yes; I'm doing that right now with a Cingular/ATT SIM card in a
T-Mobile branded, but unlocked, phone.

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Bert Hyman | St. Paul, MN | bert@iphouse.com

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Todd H. - 14 May 2007 15:45 GMT

> If i unlock my phone,can i take a Sim card from another carrier ( ex.
> T-Mobile ) & put it in my phone & it will work on there service.

Assuming the phone is designed to operate on the same relevant gsm
bands, yes, a T-mobile SIM should work for T-mobile service on an
"unlocked" GSM phone sourced from Cingular.

> Also if my phone is unlocked will it still work on Cingular ?

With your Cingular SIM, yes it should.

--
Todd H.
http://toddh.net/

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