Windows 10 Mobile build 9857
| Build of Windows 10 Mobile | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 6.4 |
| Build number | 9857 |
| Build revision | 0 |
| Architecture | ARM32 |
| Build lab | fbl_partner_qc |
| Compiled on | 2014-10-07 |
Windows 10 Mobile build 9857 is a build of Windows 10 Mobile, which was uploaded to BetaArchive on 6 January 2020 as an FFU file for the Microsoft Hapanero (RX-130) engineering board revision 1.0.[1]
New features[edit | edit source]
This build introduces new features that would be publicly announced or added much later during Windows 10 Mobile's development cycle:
Start screen[edit | edit source]
The ability to resize live tiles on the start screen to 4x4 and 4x2 sizes has been added.
Universal Application Platform[edit | edit source]
Several new UI surfaces have been updated or introduced in this build utilizing the new Universal Application Platform. (UAP, later referred to publicly as the Universal Windows Platform/UWP) These UI surfaces are meant to replace the existing Splash / UIX UI surfaces but are mostly available as secondary applications in this build due to the earliness of the implementation of the UAP.
- A new work in progress lock screen has been added in this build. It is not yet used by default and can be invoked by launching the "LockApp.WindowsPhone" start menu entry.
- A brand new Print Dialog has been added in this build for use by UAP applications. A test entry point has been added to invoke it from the start screen as well.
New work in progress lockscreen
New print dialog
Ditto
Keyboard[edit | edit source]
The touch keyboard has received a new set of accessibility enhancements such as a knob to position the caret in text fields, or the ability to move it to either sides of the display for easier typing experiences on large screen devices. It is also now possible to hold on the space bar and move the keyboard up and down, undocking it from its fixed bottom position.
New Keyboard with carret knob
New Keyboard positioned on the left side of the screen
New Keyboard positioned on the right side of the screen
New Keyboard in the new floating position
New Keyboard speech functionality
File Explorer[edit | edit source]
- A new file explorer has been added to this build. While it remains basic, it notably enables the use of external storage devices.
Misc[edit | edit source]
- USB OTG Support and USB-C support has been added.
- The Microsoft Feedback application has been added in this build for selfhosters internal to Microsoft to file suggestions and issues about the operating system.
Microsoft Feedback
