diff --git a/ESPBMS.ino b/ESPBMS.ino
index dddef3d..667969e 100644
--- a/ESPBMS.ino
+++ b/ESPBMS.ino
@@ -66,6 +66,7 @@ void loop() {
         }
 
         // Get remote service
+        Serial.print("Get remote service...");
         BLERemoteService* pRemoteService = pClient->getService(serviceUUID);
         if (pRemoteService == nullptr){
             Serial.println(String("BLE: failed to find service UUID"));
@@ -76,6 +77,7 @@ void loop() {
         }
 
         // Get BMS receive characteristic
+        Serial.print("Get BMS receive characteristic...");
         BLERemoteCharacteristic* pRemoteCharacteristic_rx = pRemoteService->getCharacteristic(charUUID_rx);
         if (pRemoteCharacteristic_rx == nullptr){
             Serial.println(String("BLE: failed to find RX UUID"));
@@ -86,6 +88,7 @@ void loop() {
         }
 
         // Register callback for remote characteristic (receive channel)
+        Serial.print("Get BMS receive characteristic...");
         if (pRemoteCharacteristic_rx->canNotify()){
             pRemoteCharacteristic_rx->registerForNotify(MyNotifyCallback);
         }else{
@@ -96,6 +99,7 @@ void loop() {
         }
 
         // Get BMS transmit characteristic
+        Serial.print("Get BMS transmit characteristic...");
         BLERemoteCharacteristic* pRemoteCharacteristic_tx = pRemoteService->getCharacteristic(charUUID_tx);
         if (pRemoteCharacteristic_tx == nullptr){
             Serial.println(String("BLE: failed to find TX UUID"));
@@ -106,6 +110,7 @@ void loop() {
         }
 
         // Check whether tx is writeable
+        Serial.print("Check whether tx is writeable...");
         if (!(pRemoteCharacteristic_tx->canWriteNoResponse())){
             Serial.println(String("BLE: failed TX remote characteristic is not writable"));
             Serial.println("Failed TX remote characteristic is not writable");
@@ -113,6 +118,8 @@ void loop() {
             continue;
         }
 
+        Serial.print("Get data...");
+
         gotBasicInfo=false;
         gotCellInfo=false;