I need to use in Siemens T35i GSM Modem SIM card with pin code. What I should to put in the AT sring?



You should take out the SIM card from the Siemens phone and put it to a normal handset. In that handset you can disable the PIN code on the SIM. We don't recommend you to use a PIN code to protect your SIM in SMS applications, because if you get the pin wrong, the software will quickly use up your three tries, then you can enter the PUK code.

If you still want to use the PIN, you might configure the following AT initialization command in the GSM Driver configureation form: AT+CPIN=1234

Again, please note, that this is dangerous, because if you enter an invalid pin using this command, and you try to connect to your phone a number of times, the card will switch to PUK request mode.

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