diff --git a/common_src/lib/liblynq-sim/include/lynq_sim.h b/common_src/lib/liblynq-sim/include/lynq_sim.h
new file mode 100755
index 0000000..c2d7793
--- /dev/null
+++ b/common_src/lib/liblynq-sim/include/lynq_sim.h
@@ -0,0 +1,94 @@
+/*============================================================================= 
+#     FileName: lynq_sim.h
+#     Desc: about SIMAPI
+#     Author: lei 
+#     Version: V1.0
+#     LastChange: 2022-03-31 
+#     History: 
+# If you need to use any API under lynq_sim, you must first call the lynq_sim_init() function to initialize these functions.
+=============================================================================*/
+#ifndef __LYNQ_SIM__
+#define __LYNQ_SIM__
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int lynq_get_sim_status(int *card_status);
+int lynq_get_imsi(char buf[]);
+int lynq_sim_init(int utoken);
+int lynq_sim_deinit(void);
+int lynq_enable_pin(char pin[]);
+int lynq_disable_pin(char pin[]);
+int lynq_get_iccid(char buf[]);
+int lynq_query_pin_lock(char *pin,int buf[]);
+int lynq_verify_pin(char *pin);
+int lynq_change_pin(char *old_pin, char *new_pin);
+int lynq_unlock_pin(char *puk, char *pin);
+int lynq_query_phone_number(char buf[]);
+int lynq_switch_card(int slot);
+int lynq_screen(int num);
+int lynq_get_imei(char buf[]);
+int lynq_get_imei_and_sv(char imei[],char sv[]);
+
+/**
+ * @brief                   Request SIM I/O operation.
+ *                          This is similar to the TS 27.007 "restricted SIM" operation
+ *                          where it assumes all of the EF selection will be done by the callee.
+ * @param  list             type: [IN] list[0]:one of the commands listed for TS 27.007 +CRSM.(command)
+ *                          type: [IN] list[1]:EF id(fileid)
+ *                          type: [IN] list[2]:offset(p1)
+ *                          type: [IN] list[3]:offset(p2)
+ *                          type: [IN] list[4]:response len,sometimes needn't care(p3)
+ * @param  path             type: [IN] "pathid" from TS 27.007 +CRSM command.
+                            type: [IN] Path is in hex asciii format eg "7f205f70"
+                            type: [IN] Path must always be provided.
+ * @param  data             type: [IN] May be NULL
+ * @param  pin2             type: [IN] May be NULL
+ * @param  aidPtr           type: [IN] AID value, See ETSI 102.221 8.1 and 101.220 4, NULL if no value.
+ * @param  sw               type: [OUT] 
+ * @param  simResponse      type: [OUT] response
+ * @return int
+ */
+int lynq_req_sim_io(int list[5], char *path, char *data, char *pin2, char *aidPtr, int sw[2], char *simResponse);
+
+/**
+ * @brief 
+ * @param  options         type: [IN] [options] define whether you want to halt, power-off, or reboot the machine.May be NULL
+ * @param  time            type: [IN] [time] specifies when you want the shutdown to perform.May be NULL
+ * @param  message         type: [IN] [message] adds a message that announces the shutdown.May be NULL
+ * @return int 
+ */
+int lynq_shutdown(char options[], char time[], char message[]);
+
+/**
+ * @brief                   get currnet version of mobiletek
+ * @param  buf              type: [out] My Param doc
+ * @return int 
+ */
+int lynq_get_version(char buf[]);
+
+/**
+ * @brief sim power on/off
+ * 
+ */
+int lynq_sim_power(int mode);
+
+/**
+ * @brief reset modem
+ * 
+ */
+int lynq_reset_modem(void);
+
+/**
+ * @brief factory test to both radio on/off
+ * 
+ */
+int lynq_factory_radio_state(int num);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+