diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 3f50663..8cbd866 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -2,12 +2,12 @@
 
 ### v2.1.0 2020-12-06
 - m5stack mute speaker
-- settings v4 (wifi/gprs/sdcard/ntp/..)
-- ble4 skipped if mac is not set (00:00:00:00:00:00)
-- improved menu (L&R buttons hides menu, parent menu now keep position)
+- Settings v4 (wifi/gprs/sdcard/ntp/..)
+- BLE skipped if mac is not set (00:00:00:00:00:00)
+- Improved menu (L&R buttons hides menu, parent menu now keep position)
 - SD card car params logging (json format)
   (note: m5stack supports max 16GB FAT16/32 microSD)
-- supported serial console commands
+- Supported serial console commands
     serviceUUID=xxx
     charTxUUID=xxx
     charRxUUID=xxx
diff --git a/dist/m5stack_core1/evDash.ino.bin b/dist/m5stack_core1/evDash.ino.bin
index 2e27678..c1926f0 100644
Binary files a/dist/m5stack_core1/evDash.ino.bin and b/dist/m5stack_core1/evDash.ino.bin differ
diff --git a/dist/ttgo_t4_v13/evDash.ino.bin b/dist/ttgo_t4_v13/evDash.ino.bin
index 6adea11..4cbfa17 100644
Binary files a/dist/ttgo_t4_v13/evDash.ino.bin and b/dist/ttgo_t4_v13/evDash.ino.bin differ
diff --git a/evDash.ino b/evDash.ino
index 7a75c66..49e4f49 100644
--- a/evDash.ino
+++ b/evDash.ino
@@ -413,9 +413,6 @@ bool sim800lSetup() {
   serial->begin(9600);
   sim800l = new SIM800L((Stream *)serial, SIM800L_RST, 512 , 512);
 
-  // SIM800L DebugMode:
-  //sim800l = new SIM800L((Stream *)serial, SIM800L_RST, 512 , 512, (Stream *)&Serial);
-
   bool sim800l_ready = sim800l->isReady();
   for (uint8_t i = 0; i < 5 && !sim800l_ready; i++) {
     Serial.println("Problem to initialize SIM800L module, retry in 1 sec");
@@ -433,16 +430,16 @@ bool sim800lSetup() {
 
     bool sim800l_gprs = sim800l->setupGPRS(liveData->settings.gprsApn);
     for (uint8_t i = 0; i < 5 && !sim800l_gprs; i++) {
-      Serial.println("Problem to set GPRS APN, retry in 1 sec");
+      Serial.println("Problem to set GPRS connection, retry in 1 sec");
       delay(1000);
       sim800l_gprs = sim800l->setupGPRS(liveData->settings.gprsApn);
     }
 
     if (sim800l_gprs) {
       liveData->params.sim800l_enabled = true;
-      Serial.println("GPRS APN set OK");
+      Serial.println("GPRS OK");
     } else {
-      Serial.println("Problem to set GPRS APN");
+      Serial.println("Problem to set GPRS");
     }
   }
 
@@ -454,27 +451,22 @@ bool sendDataViaGPRS() {
 
   NetworkRegistration network = sim800l->getRegistrationStatus();
   if (network != REGISTERED_HOME && network != REGISTERED_ROAMING) {
-    Serial.println("SIM800L module not connected to network, skipping data send");
+    Serial.println("SIM800L module not connected to network!");
     return false;
   }
 
-  if(!sim800l->isConnectedGPRS()) {
-    Serial.println("GPRS not connected... Connecting");
-    bool connected = sim800l->connectGPRS();
-    for (uint8_t i = 0; i < 5 && !connected; i++) {
-      Serial.println("Problem to connect GPRS, retry in 1 sec");
-      delay(1000);
-      connected = sim800l->connectGPRS();
-    }
-    if(connected) {
-      Serial.println("GPRS connected!");
-    } else {
-      Serial.println("GPRS not connected! Reseting SIM800L module!");
-      sim800l->reset();
-      sim800lSetup();
-  
-      return false;
-    }
+  bool connected = sim800l->connectGPRS();
+  for (uint8_t i = 0; i < 5 && !connected; i++) {
+    delay(1000);
+    connected = sim800l->connectGPRS();
+  }
+
+  if (!connected) {
+    Serial.println("GPRS not connected! Reseting SIM800L module!");
+    sim800l->reset();
+    sim800lSetup();
+
+    return false;
   }
 
   Serial.println("Start HTTP POST...");
@@ -514,6 +506,8 @@ bool sendDataViaGPRS() {
     Serial.println(rc);
   }
 
+  sim800l->disconnectGPRS();
+
   return true;
 }
 #endif //SIM800L_ENABLED
diff --git a/menu.h b/menu.h
index 50e128d..b80e593 100644
--- a/menu.h
+++ b/menu.h
@@ -65,12 +65,12 @@ MENU_ITEM menuItemsSource[100] = {
   {MENU_SDCARD_MOUNT_STATUS, 304, -1, "Status"},
   {MENU_SDCARD_REC, 304, -1, "Record"},
   
-  {3070, 307, 3, "<- parent menu"},
-  {3071, 307, -1, "Auto mode"},
-  {3072, 307, -1, "Basic info"},
-  {3073, 307, -1, "Speed"},
-  {3074, 307, -1, "Battery cells"},
-  {3075, 307, -1, "Charging graph"},
+  {3060, 306, 3, "<- parent menu"},
+  {3061, 306, -1, "Auto mode"},
+  {3062, 306, -1, "Basic info"},
+  {3063, 306, -1, "Speed"},
+  {3064, 306, -1, "Battery cells"},
+  {3065, 306, -1, "Charging graph"},
 
   {4010, 401, 4, "<- parent menu"},
   {4011, 401, -1, "Kilometers"},