diff --git a/pump/medtrum/src/main/kotlin/app/aaps/pump/medtrum/services/BLEComm.kt b/pump/medtrum/src/main/kotlin/app/aaps/pump/medtrum/services/BLEComm.kt
index c7e328a53134..eefcefdbbe2e 100644
--- a/pump/medtrum/src/main/kotlin/app/aaps/pump/medtrum/services/BLEComm.kt
+++ b/pump/medtrum/src/main/kotlin/app/aaps/pump/medtrum/services/BLEComm.kt
@@ -187,7 +187,6 @@ class BLEComm @Inject internal constructor(
         } else {
             aapsLogger.debug(LTag.PUMPBTCOMM, "Not connected, closing gatt")
             close()
-            isConnected = false
             mCallback?.onBLEDisconnected()
         }
     }
@@ -198,6 +197,8 @@ class BLEComm @Inject internal constructor(
         mBluetoothGatt?.close()
         SystemClock.sleep(100)
         mBluetoothGatt = null
+        isConnected = false
+        isConnecting = false
     }
 
     /** Scan callback  */
@@ -387,11 +388,12 @@ class BLEComm @Inject internal constructor(
                 // Wait a bit before retrying
                 SystemClock.sleep(2000)
             }
-            close()
-            isConnected = false
-            isConnecting = false
-            mCallback?.onBLEDisconnected()
-            aapsLogger.debug(LTag.PUMPBTCOMM, "Device was disconnected " + gatt.device.name) //Device was disconnected
+            // CLosing asynchronously to avoid deadlocks or silent failures in the Android BLE callback thread during disconnect.
+            handler.post {
+                close()
+                mCallback?.onBLEDisconnected()
+                aapsLogger.debug(LTag.PUMPBTCOMM, "Device was disconnected " + gatt.device.name) //Device was disconnected
+            }
         }
     }