Microsoft has delivered an updated test release of Windows 10 Mobile, the version of its upcoming operating system that targets phones.
The move follows swiftly after the latest build for PCs, and on the announcement that Microsoft is to shed 7,800 jobs from its phone business division.
Build 10166 of the Windows 10 Mobile technical preview was released to testers signed up to the Fast Ring of Microsoft's Windows Insider programme on 10 July.
It brings the phone version of the operating system in line with that for PCs, with Build 10166 for PCs getting pushed out to testers a day earlier.
The update was announced in the time-honoured fashion with a posting on the official Windows blog from Gabe Aul, Microsoft's director of programme management for the Windows Fundamentals team.
"There are lots of small changes and feature tweaks in this build, but our major focus over the past few builds on mobile has been about improvements to core quality," Aul said.
This contrasts with Build 10166 for the PC, which was mainly focused on bug fixes and final tweaks and refinements to the user interface, as would be expected with the official 29 July release date for this version now just a couple of weeks away.
However, Microsoft has previously disclosed that the mobile version of Windows 10 will not be delivered at the same time as that for PCs, and it has yet to hint at when users can expect to see this, other than saying it will be later this year.
It seems evident that Windows 10 Mobile is nowhere near as ready for release as the PC version.
Among the list of problems addressed in this build is one where some users were unable to unlock their phone despite entering their PIN, which Microsoft blamed on a TPM issue, plus improved reliability of app downloads and updates from the Microsoft Store, which is itself no longer marked as a beta version.
Meanwhile, Microsoft raised eyebrows last week with the news that it will cut 7,800 jobs from its phone hardware business, effectively the Nokia handset division acquired in 2013.
The announcement raised questions over the future of Windows phones, and some industry commentators speculated that Microsoft may be preparing to get out of the phone hardware business entirely.
This may be premature, however, as Microsoft chief executive Satya Nadella stated in his email to employees about the move that the firm intended to "run a more effective phone portfolio, with better products and speed to market given the recently formed Windows and Devices Group".
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