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Answer should be OK.<br>
Now unlock it by inserting your SIM card PIN number. Use the command:
<pre>at+cpin=<PIN></pre>
If you correctly inserted the PIN number, the answer should be OK. (Note: If you fail more than 3 times, your SIM card will lock and you will have to insert PUK number.) Now you are ready to use the GSM/GPS modem.
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