As of July 11, 2017, Windows Phone 8.1 users are no longer eligible to receive new security updates, non-security hotfixes, free assisted support options, or online technical content updates from Microsoft for free. Third parties or paid support programs may provide ongoing support, but it is important to recognize that Microsoft support will not publicly provide updates or patches for Windows Phone 8.1.
End of support means there will be no more product or security updates. This is in-line with our Support Lifecycle policy.
Even after end of support, automatic or manual creation of new device backups for setting and some applications will continue for 3 months, ending October 11, 2017. Other services including photo uploads, restoring a device from an existing device backup and the Store will continue to work for at least another 12 months from end of support, after which time, services will start to be discontinued.
Microsoft has no plans to push the Windows 10 Mobile upgrade proactively to Windows Phone 8.1 handsets that are eligible for the upgrade.
Microsoft recommends customers upgrade eligible Windows Phone 8.1 devices to Windows 10 Mobile at the earliest opportunity. Devices upgraded to Windows 10 Mobile will receive security and servicing updates according to Microsoft’s support lifecycle policies.
If users want to upgrade their eligible Windows Phone 8.1 to Windows 10 Mobile, they can initiate the update via the Upgrade Advisor app or an MDM system of their choice.
With the Windows Phone 8.1 operating system out of support and its device backup functionality ending soon, we recommend that customers move to a supported platform, either by upgrading eligible Windows Phone 8.1 devices to Windows 10 Mobile at the earliest opportunity or by purchasing a new Windows 10 Mobile device where available.
Customers who expect to continue using their Windows Phone 8.1 device after October 11, 2017 are encouraged to manually create a backup using the Settings->Backup->Apps + Settings and then tapping Backup now before that date and to contact their app publisher for instructions on how to preserve app-specific data after that date.
Yes. Your Windows Phone 8.1 device should continue to work after July 11, 2017, but there will be no updates after July 11, 2017 (including security updates) and device backup functionality and other backend services will be phased out as described above.
More info. The Software section indicates the general product name we use to describe the release (for example, "Windows Phone 8.1" or "Windows Phone 8"). The OS version section indicates the specific build number of the release (for example, "8.0.0000.0" or "8.0.10517.150").
No. Newer phones running Windows 10 Mobile are still fully supported. Phones running Windows 10 Mobile, released April 2017 will be supported through June of 2019. Phones which upgrade to future releases of Windows 10 Mobile will be supported beyond June of 2019.
Windows Phone 8.1 was a great software release, but technology has evolved along with the needs and expectations of your customers and partners that have already adopted modern platforms and devices. An older mobile operating system can no longer address today’s business and technology needs nor security threats. Companies still on Windows Phone 8.1 are also missing out on tangible benefits of modernizing their IT investments and enhancing their security to meet the needs of a mobile workforce through future-proofing their IT investments.