How can I enable Android GUI to unlock SIM PIN after booting?

I'm a android RIL driver developer. I had implement "Change SIM PIN" function (RIL write AT command to modem). But when SIM card status is "SIM_PIN" (require PIN code to unlock SIM card), the "Change SIM PIN" function would be failed. How can I enable Android GUI t开发者_运维百科o unlock SIM PIN after booting?

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If you've been able to implement a change sim pin function (AT+CLCK I believe), then I assume you're in a position to implement an 'Enter PIN' function (AT+CPIN="pin_no") .

Just call this function before your change sim pin function.