Windows Phone 8.1 GDR2 goes to OEMs, may bring anti-theft mode


While we are all pretty obsessed with Windows 10 Mobile, it will likely be half a year before the software ends up on our handsets.

At the same time the long-awaited Windows Phone 8.1 GDR2 seems to be bubbling under, and official documentation has now shown up for the OS update on Microsoft’s Windows Phone OEM dev centre.

A variety of new features appear to be supported, but nothing ground breaking.  New is Video over LTE, support for additional languages including Bangla (Bangladesh), Khmer, Kiswahili and Lao, a new anti-theft policy, and a variety of other features which can be seen below.

Microsoft has been promising am anti-theft feature to rival that of iOS and Android by the middle of 2015, suggesting we will see devices running the new update well before then.

Software changes

Customization and runtime configuration changes

These customization and runtime configuration changes are new for Windows Phone 8.1 GDR2.

New or updated featureDescription
Video over LTECustomize specific settings and behavior for Video over LTE to meet mobile operator requirements including:

  • Showing or hiding the LTE video calling switch
  • Setting the default value for the switch
  • Customizing the name/label of the switch and the description
  • Specifying the timeout, in milliseconds, for the phone to remain in video transition state
  • Enabling video conferencing
  • Specifying the amount of time before a video call is downgraded to a voice call due to low video quality
  • Hiding the video charges dialog that is displayed when the user turns on the LTE video calling switch
Restore Start tile layoutAppend the OEM-defined Start screen layout to the bottom of the user’s backed up Start screen layout when the user restores their device from a backup.
More phone languagesInclude support for these additional phone languages:

  • Bangla (Bangladesh)
  • Khmer
  • Kiswahili
  • Lao
Remove the trailing MSISDN digits on a SIM cardUse to remove the trailing MSISDN digits that are appended to the service provider name (SPN) in the phone UI.
Use voice domain for emergency call brandingUse to enable the voice domain to decide whether to useEmergency calls only or No service in the phone UI branding.
SimbldIccidTable.xmlCreate a SimbldIccidTable.xml to allow certain SIMs to disable one or more languages. For more information, see the Use SIMBLD to disable languages per ICCID section in Variant selection during runtime.
Key handling and ProvXML ordering improvementsFor more information, see the Selecting the variant section inVariant selection during runtime.

Provisioning and device management updates

These provisioning and device management features are new for Windows Phone 8.1 GDR2.

New or updated featureDescription
PolicyManager configuration service providerAdded the following new policies:

  • Connectivity/AllowManualVPNConfiguration
  • Connectivity/CellularAppDownloadMBLimit
  • Connectivity/WLANScanMode
  • Experiences/AllowTaskSwitcher
  • Security/AntiTheftMode
  • DataProtection/RequireProtectionUnderLockConfig
  • DataProtection/EnterpriseProtectedDomainNames
VPN configuration service providerChanges:

  • New AlwaysOn value in ConnectionType.
  • New Policies/AppIdleTimeout setting in the CSP.

Manufacturing changes

These manufacturing changes are new for Windows Phone 8.1 GDR2.

New or updated featureDescription
MMOS image definitionYou can enable TShell in MMOS.

Testing changes

These software tracing changes are new for Windows Phone 8.1 GDR2.

New or updated featureDescription
Use Field Medic from a command promptNew parameters were added to FieldMedicHelper.
LBS test APINew location-based services (LBS) test library API.
Gathering custom Qualcomm modem logs with Field MedicUse to add custom modem logging profiles to Field Medic.
SSM firewall plug-in for Qualcomm modem logging in Field MedicUse to create an SSM firewall plug-in for Qualcomm modem logging.

We will continue digging through the documentation to see if anything else interesting pops up.

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