There are two different ways to get Windows 10 Mobile:
- Buy one of the select new devices running Windows 10 Mobile that are available now.
- If the upgrade is available for your existing Windows Phone 8.1 device, you can install it. To check for and install the upgrade, download the Upgrade Advisor app from the Store. Open the app, then select Enable Windows 10 upgrade.
The availability of Windows 10 Mobile as an upgrade for existing Windows Phone 8.1 devices will vary by device manufacturer, device model, country or region, mobile operator or service provider, hardware limitations, and other factors.
For a list of eligible phones and important info about the upgrade and Windows 10 Mobile, go to the Windows 10 Mobile specifications page.
Because of the size of the update, a Wi-Fi Internet connection is required for download and installation.
- Plug your phone into a charger to make sure it doesn't run out of power during the upgrade.
- Connect your phone to a Wi‑Fi network. Because of the size of the update, a Wi‑Fi connection is required for download and installation.
- It’s a good idea to back up your settings, apps, photos, and text messages to the cloud before installing the update. To set up backups, on Start , swipe over to the All apps list, and then select Settings > Backup, and then follow the instructions.
- Rename your phone to make sure you don't overwrite your Windows Phone 8.1 backup after upgrading to Windows 10 Mobile. To rename your phone, on Start , swipe over to the All apps list, and then select Settings > About > Edit name.
- Free up enough storage space to download and install the update. You can use the Upgrade Advisor app and it will recommend files, such as videos or photos, that you can move to OneDrive or an SD card, if you have one installed. You can also connect your phone to a PC and move your files there. After the upgrade, you can move files back to your phone if there's enough space.
If you remove apps from your phone, you can reinstall them from Microsoft Store after the upgrade if there's enough space. Deleting an app will erase app data, such as saved progress in a game.