diff --git a/mbtk/liblynq_lib/src/lynq_sim.c b/mbtk/liblynq_lib/src/lynq_sim.c
index 777ea46..13040eb 100755
--- a/mbtk/liblynq_lib/src/lynq_sim.c
+++ b/mbtk/liblynq_lib/src/lynq_sim.c
@@ -541,7 +541,24 @@
         return QSER_RESULT_FAIL;
     }
 
-    mbtk_system_reboot(0);
+    //mbtk_system_reboot(0);
+    mbtk_modem_info_t info;
+    info.fun = MBTK_DEV_MODEM_MIN_FUN;
+    info.rst = 0;
+    int err = mbtk_set_modem_fun(qser_info_handle, &info);
+    if(err)
+    {
+        LOGE("[qser_data_call] mbtk_set_modem_fun Error : %d\n", err);
+        return QSER_RESULT_FAIL;
+    }
+
+    info.fun = MBTK_DEV_MODEM_FULL_FUN;
+    err = mbtk_set_modem_fun(qser_info_handle, &info);
+    if(err)
+    {
+        LOGE("[qser_data_call] mbtk_set_modem_fun Error : %d\n", err);
+        return QSER_RESULT_FAIL;
+    }
     return QSER_RESULT_SUCCESS;
 }