diff --git a/targets/TARGET_STM/TARGET_STM32L4/TARGET_MTS_DRAGONFLY_L471QG/onboard_modem_api.c b/targets/TARGET_STM/TARGET_STM32L4/TARGET_MTS_DRAGONFLY_L471QG/onboard_modem_api.c
index 66f610b0cb..b97fecf0b3 100644
--- a/targets/TARGET_STM/TARGET_STM32L4/TARGET_MTS_DRAGONFLY_L471QG/onboard_modem_api.c
+++ b/targets/TARGET_STM/TARGET_STM32L4/TARGET_MTS_DRAGONFLY_L471QG/onboard_modem_api.c
@@ -46,6 +46,7 @@ void onboard_modem_init()
     gpio_init_inout(&gpio, RADIO_PWR, PIN_OUTPUT, PushPullNoPull,   1);
     gpio_init_inout(&gpio, BUF_EN, PIN_OUTPUT, OpenDrainNoPull,   0);
     gpio_init_inout(&gpio, MDMRST,  PIN_OUTPUT, OpenDrainNoPull,  1);
+    gpio_init_inout(&gpio, MDMPWRON, PIN_OUTPUT, OpenDrainNoPull, 1);
 }
 
 void onboard_modem_deinit()
@@ -53,11 +54,14 @@ void onboard_modem_deinit()
     gpio_t gpio;
 
     // Back into reset
-    gpio_init_inout(&gpio, RADIO_PWR, PIN_OUTPUT, PushPullNoPull,   0);
-    gpio_init_inout(&gpio, BUF_EN, PIN_OUTPUT, OpenDrainNoPull,   1);
     gpio_init_inout(&gpio, MDMRST,PIN_OUTPUT, OpenDrainNoPull, 0);
+    gpio_init_inout(&gpio, BUF_EN, PIN_OUTPUT, OpenDrainNoPull,   1);
+    gpio_init_inout(&gpio, RADIO_PWR, PIN_OUTPUT, PushPullNoPull,   0);
 }
 
+
+
+
 void onboard_modem_power_up()
 {
 #if defined(TARGET_UBLOX_C030_R410M)
@@ -65,11 +69,34 @@ void onboard_modem_power_up()
     press_power_button(1000000);
 #else
 	/* keep the power line low for 50 microseconds */
-    press_power_button(1000000);
+    gpio_t gpio;
+    gpio_init_in(&gpio, MON_1V8);
+
+	if(gpio_is_connected(&gpio) != 0 && gpio_read(&gpio) != 0) {
+		unsigned int i = 0;
+		while(i < 5)
+		{
+			press_power_button( 2000000);
+			wait_ms(1000);
+			onboard_modem_deinit();
+			wait_ms(1000);
+			onboard_modem_init();
+			wait_ms(250);
+
+			if(gpio_is_connected(&gpio) != 0 && gpio_read(&gpio) == 0)
+			{
+				break;
+			}
+			i++;
+		}
+	}
+
+    press_power_button( 2000000);
+
 #endif
 
     /* give modem a little time to respond */
-    wait_ms(100);
+    wait_ms(500);
 }
 
 void onboard_modem_power_down()
@@ -79,7 +106,7 @@ void onboard_modem_power_down()
     press_power_button(1500000);
 #else
 	/* keep the power line low for 1 seconds */
-    press_power_button(1500000);
+    press_power_button(300000);
 #endif
 }
 
diff --git a/targets/targets.json b/targets/targets.json
index 84823c2345..a745002335 100755
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -2258,7 +2258,7 @@
             }
         },
         "detect_code": ["0312"],
-        "macros_add": [ "RTC_LSE=1"],
+        "macros_add": [ "RTC_LSE=1", "CELLULAR_DEVICE=UBLOX_PPP"],
         "device_has_add": ["ANALOGOUT", "CAN", "LOWPOWERTIMER", "SERIAL_ASYNCH", "SERIAL_FC", "TRNG", "FLASH", "ANALOGIN", "I2C", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "SERIAL", "SLEEP", "SPI", "SPISLAVE"],
         "release_versions": ["2", "5"],
         "device_name": "STM32L471QG",