Failed to read the device model, manufacturer information

Hi,

I recently I have an transient problem on reading the device model, manufacturer and user information from the Android.OS.Build library as below,

` public string DeviceName { get { // read and return current device name return string.IsNullOrEmpty(Android.OS.Build.User) ? string.Empty : Android.OS.Build.User; } }

    public string DeviceModal
    {
        get
        { 
            // read and return current device model
            return string.IsNullOrEmpty(Android.OS.Build.Model) ? 
                string.Empty : 
                    Android.OS.Build.Model.StartsWith(Android.OS.Build.Manufacturer) ? 
                        Android.OS.Build.Model : 
                        string.Format("{0} {1}", Android.OS.Build.Manufacturer, Android.OS.Build.Model);
        }
    }

`

Does anyone having the same problem? The same code used to work when I compiled my code with MonoDevelop. Now the same code no longer work in the latest sdk with Xamarin Studio.

Regards, Hackzai