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Home > Cell Phone Forums > Carriers Talk > AT&T Talk > switching sim card

switching sim card

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tidbit68
Antenna Booster Novice
Posts: 2
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Tue Oct 05, 2004 10:55 pm 
hi.. i have service with cingular on the gait family plan. i have the sony ericson t62u phone and i just bought a used nokia 6340i because i hate the sony. both of those phones work on the gait network and on the plan that i am on.. when i get the nokia phone, can i just switch the sim card to make the nokia phone work? are there any special instructions or tips i should know about? thank you!
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JCMyersIV
Radiation Shield Addict
Posts: 122

Phone Model:
V635 & BB 7290

Service Provider:
Cingular
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Tue Oct 05, 2004 11:08 pm 
Actually, its not as easy as merely swapping the sim cards. GSM uses the SIM card to authenticate you to a network; TDMA and AMPS (and CDMA for that matter) use an ESN unique to the device. It should be a fairly easy swap, but you'll need to call customer service to get them to update the equipment you're using, and there may be a couple steps you have to enter into the phone for it to send the pairing of your phone number (instead of the previous owner's) and ESN.
tidbit68
Antenna Booster Novice
Posts: 2
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Tue Oct 05, 2004 11:19 pm 
thanks for the info! if i take the phone to the cingular store, could they do all that for me?
JCMyersIV
Radiation Shield Addict
Posts: 122

Phone Model:
V635 & BB 7290

Service Provider:
Cingular
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Tue Oct 12, 2004 12:10 am 
the last time I programmed a TDMA phone was over the phone with AT&T (they told me what to enter). I have to think they'd be able to do it for you via 611 or in a store.

Best of luck.
Nesper
Antenna Booster Novice
Posts: 2
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Tue Oct 12, 2004 10:43 am 
GAIT phones don't need to be programmed - you will need to call into customer service to give them the ESN and IMEI. You can just switch the SIM yourself.
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