diff --git a/sonoff/sonoff.ino b/sonoff/sonoff.ino
index c4b0cbb20..e8bd64542 100755
--- a/sonoff/sonoff.ino
+++ b/sonoff/sonoff.ino
@@ -2176,6 +2176,21 @@ void Every250mSeconds()
       restart_flag--;
       if (restart_flag <= 0) {
         AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_APPLICATION D_RESTARTING));
+
+        /*
+        Function:
+        Set whether the chip will do RF calibration or not when power up. The option is 0 by default.
+        Prototype:
+        void system_phy_set_powerup_option(uint8 option)
+        Parameter:
+        uint8 option : RF initialization when power up.
+        0 : RF initialization when power up depends on esp_init_data_default.bin(0〜～127byte) byte 114.
+        1 : RF initialization only calibrate VDD33 and TX power which will take about 18 ms; this reduces the current consumption.
+        2 : RF initialization only calibrate VDD33 which will take about 2 ms; this has the least current consumption.
+        3 : RF initialization will do the whole RF calibration which will take about 200 ms; this increases the current consumption.
+        */
+        system_phy_set_powerup_option(3);
+
         EspRestart();
       }
     }