Device tracking does not work on Huaweii P9Lite

We are working on an app that uses device tracking for a hide and search game. On most of our test devices we got the expected result but on our huaweii P9Lite it looks like there is an error calibrating our phone (tested this on 2 different huaweiis P9 Lite and got the same error).

CameraDevice::getCameraCalibration(): Failed to get camera calibration because the camera is not initialized.

Could not initialize the tracker. UnityEngine.DebugLogHandler:Internal_Log(LogType, String, Object) UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[]) UnityEngine.Logger:Log(LogType, Object) UnityEngine.Debug:LogError(Object) Vuforia.TrackerManagerImpl:InitTracker() Vuforia.DeviceTrackerARController:InitDeviceTracker() Vuforia.DeviceTrackerARController:OnVuforiaInitialized() System.Reflection.MonoMethod:InternalInvoke(Object, Object[], Exception&) System.Reflection.MonoMethod:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222) System.Reflection.MethodBase:Invoke(Object, Object[]) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115) System.Delegate:DynamicInvokeImpl(Object[]) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/Delegate.cs:443) System.MulticastDelegate:DynamicInvokeImpl(Object[]) (at /Users/builduser/buildslave

Normal AR does work as intended on this device but rotational AR/VR does not seem to work. Tested the same project on following devices where it did work:

* Samsung S6

* LG g3

* Nexus 6

* iPhone 6

I am using Vuforia 6.2.6 and these are the settings I used to enable device tracking.