Here's what got fixed in Windows 10 Mobile build 10586.164

Earlier today, Microsoft released Windows 10 Mobile build 10586.164 to the Slow, Release Preview, and Production rings. For devices in the Production ring, it's rolling out to unlocked models first and carrier locked models over the next week.

Because of the way that the firm is rolling out the cumulative update, users of carrier locked phones that want the build now must sign up for the Slow or Release Preview rings. If you're on a Fast ring build (more specifically, 14267), you must roll back through Windows Device Recovery Tool.

Microsoft didn't release a blog post for the build, so we're only seeing an official changelog now. Here's what's new:

Improvements for the reliability of app notifications, including text messages and alarms not ringing as scheduled.

Improvements for text message backup to reduce data and battery usage.

Fixes for Microsoft Edge with address bar suggestions showing late or persisting during navigation, “Close all tabs” not closing all tabs, and Word Flow on the address bar not functioning as expected.

Fix for a problem where the Microsoft account was not detected by the Outlook Mail, Outlook Calendar and People app. Attempting to add a new contact in this state caused the People app to crash for some users.

Fix for a problem that caused the Wi-Fi connection to temporarily switch off after prolonged use for some users.

Fix for a problem that caused first-party app updates to fail to install successfully for some users, leaving the apps in state where they cannot be launched.

Improvements for battery usage, Bluetooth connectivity, and OS reliability.