How to use an at&t sim card in a tmobile blackberry?

4 answers

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ANSWER #1 of 4

You need to get it unlocked at your local phone store it costs about $25

ANSWER #2 of 4

You can also search for your cellphones unlock code and go to It will ask you for your phones IMEI number and walk you through the steps. But I think the charge like $15.

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ANSWER #3 of 4

but it has been used before

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ANSWER #4 of 4

If you unlock the T-Mobile Blackberry, You can not only use AT&T SIM but you can use any international GSM SIM to it. You can unlock your mobile using unlock code. You can get the unlocking code from at affordable cost.

Do they sell prepaid Sim cards for Sidekicks?

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