diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/amazfitbip/AmazfitBipService.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/amazfitbip/AmazfitBipService.java
index 3d543f69..fb1c6e3c 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/amazfitbip/AmazfitBipService.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/amazfitbip/AmazfitBipService.java
@@ -24,4 +24,6 @@ public class AmazfitBipService {
 
     // goes to UUID_CHARACTERISTIC_3_CONFIGURATION, TODO: validate this for Mi Band 2, it maybe triggers more than only GPS version...
     public static final byte[] COMMAND_REQUEST_GPS_VERSION = new byte[]{0x0e};
+
+    public static final byte COMMAND_ACTIVITY_DATA_TYPE_DEBUGLOGS = 0x07;
 }
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/MiBand2Service.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/MiBand2Service.java
index ccb540cd..36471281 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/MiBand2Service.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/MiBand2Service.java
@@ -104,7 +104,7 @@ public class MiBand2Service {
     public static final byte AUTH_BYTE = 0x8;
 
     // maybe not really activity data, but steps?
-    public static final byte COMMAND_FETCH_ACTIVITY_DATA = 0x02;
+    public static final byte COMMAND_FETCH_DATA = 0x02;
     public static final byte COMMAND_XXXX_ACTIVITY_DATA = 0x03; // maybe delete/drop activity data?
 
     public static final byte[] COMMAND_SET_FITNESS_GOAL_START = new byte[] { 0x10, 0x0, 0x0 };
@@ -176,7 +176,7 @@ public class MiBand2Service {
     public static final byte COMMAND_ACTIVITY_DATA_START_DATE = 0x01;
     public static final byte COMMAND_ACTIVITY_DATA_TYPE_ACTIVTY = 0x01;
     public static final byte COMMAND_ACTIVITY_DATA_TYPE_UNKNOWN_2 = 0x02;
-    public static final byte COMMAND_ACTIVITY_DATA_XXX_DATE = 0x02; // issued on first connect, followd by COMMAND_XXXX_ACTIVITY_DATA instead of COMMAND_FETCH_ACTIVITY_DATA
+    public static final byte COMMAND_ACTIVITY_DATA_XXX_DATE = 0x02; // issued on first connect, followd by COMMAND_XXXX_ACTIVITY_DATA instead of COMMAND_FETCH_DATA
 
     public static final byte COMMAND_FIRMWARE_INIT = 0x01; // to UUID_CHARACTERISTIC_FIRMWARE, followed by fw file size in bytes
     public static final byte COMMAND_FIRMWARE_START_DATA = 0x03; // to UUID_CHARACTERISTIC_FIRMWARE
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/amazfitbip/AmazfitBipSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/amazfitbip/AmazfitBipSupport.java
index 96e04e4f..2498986b 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/amazfitbip/AmazfitBipSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/amazfitbip/AmazfitBipSupport.java
@@ -43,6 +43,7 @@ import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.alertnotification.AlertCategory;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.alertnotification.AlertNotificationProfile;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.alertnotification.NewAlert;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.amazfitbip.operations.AmazfitBipFetchLogsOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.amazfitbip.operations.AmazfitBipUpdateFirmwareOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.miband.NotificationStrategy;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.miband2.MiBand2Support;
@@ -224,6 +225,15 @@ public class AmazfitBipSupport extends MiBand2Support {
         }
     }
 
+    @Override
+    public void onTestNewFunction() {
+        try {
+            new AmazfitBipFetchLogsOperation(this).perform();
+        } catch (IOException ex) {
+            LOG.error("Unable to fetch logs", ex);
+        }
+    }
+
     @Override
     public boolean onCharacteristicChanged(BluetoothGatt gatt,
                                            BluetoothGattCharacteristic characteristic) {
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/AbstractFetchOperation.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/AbstractFetchOperation.java
index 2c95d72f..8029de8c 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/AbstractFetchOperation.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/AbstractFetchOperation.java
@@ -132,10 +132,6 @@ public abstract class AbstractFetchOperation extends AbstractMiBand2Operation {
      */
     protected abstract void handleActivityNotif(byte[] value);
 
-    /**
-     * Creates samples from the given 17-length array
-     * @param value
-     */
     protected abstract void bufferActivityData(byte[] value);
 
     protected void handleActivityMetadata(byte[] value) {
@@ -146,7 +142,7 @@ public abstract class AbstractFetchOperation extends AbstractMiBand2Operation {
                 // the 4th - 7th bytes probably somehow represent the number of bytes/packets to expect
 
                 // last 8 bytes are the start date
-                Calendar startTimestamp = getSupport().fromTimeBytes(org.apache.commons.lang3.ArrayUtils.subarray(value, 7, value.length));
+                Calendar startTimestamp = getSupport().fromTimeBytes(Arrays.copyOfRange(value, 7, value.length));
                 setStartTimestamp(startTimestamp);
 
                 GB.toast(getContext().getString(R.string.FetchActivityOperation_about_to_transfer_since,
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchActivityOperation.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchActivityOperation.java
index 36999ace..9eda8886 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchActivityOperation.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchActivityOperation.java
@@ -71,7 +71,7 @@ public class FetchActivityOperation extends AbstractFetchOperation {
         builder.write(characteristicFetch, BLETypeConversions.join(new byte[] { MiBand2Service.COMMAND_ACTIVITY_DATA_START_DATE, MiBand2Service.COMMAND_ACTIVITY_DATA_TYPE_ACTIVTY }, getSupport().getTimeBytes(sinceWhen, TimeUnit.MINUTES)));
         builder.add(new WaitAction(1000)); // TODO: actually wait for the success-reply
         builder.notify(characteristicActivityData, true);
-        builder.write(characteristicFetch, new byte[] { MiBand2Service.COMMAND_FETCH_ACTIVITY_DATA });
+        builder.write(characteristicFetch, new byte[] { MiBand2Service.COMMAND_FETCH_DATA});
     }
 
     protected void handleActivityFetchFinish() {
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchSportsSummaryOperation.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchSportsSummaryOperation.java
index 91db544e..f4d92a00 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchSportsSummaryOperation.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/miband2/operations/FetchSportsSummaryOperation.java
@@ -60,7 +60,7 @@ public class FetchSportsSummaryOperation extends AbstractFetchOperation {
 //                getSupport().getTimeBytes(sinceWhen, TimeUnit.MINUTES)));
 //        builder.add(new WaitAction(1000)); // TODO: actually wait for the success-reply
 //        builder.notify(characteristicActivityData, true);
-//        builder.write(characteristicFetch, new byte[] { MiBand2Service.COMMAND_FETCH_ACTIVITY_DATA });
+//        builder.write(characteristicFetch, new byte[] { MiBand2Service.COMMAND_FETCH_DATA });
     }
 
     @Override