How to unlock code with AT+COMMAND

i want unlock pattern/pin/password lock on samsung s7262 with AT+COMMAND. AT+COMMAND is a command for call/message/change imei and more operation. for send AT+COMMAND to device we using com port connection.

everyone can show me AT+COMMAND for unlock code on galaxy old models?

You need to read three documents

• V.250 (chapter 5) for the fundamentals of AT commands, details on syntax and behaviour
• 27.007 defines most mobile phone related AT commands
• 27.005 defines commands related to messages

All documents linked from https://stackoverflow.com/tags/at-command/info.

Specifically for unlocking the phone the command is AT+CPIN.