Microsoft has just pushed Windows 10 Mobile Build 10586.218 as the latest cumulative update to Windows Insiders in  Release Preview Rings and also to non-insiders with a Lumia 950 / XL, 650 and 550. If you are stuck in Fast ring with an older device, you need to open Windows Insider app and select Release Preview rings. We have covered installation experience & First impressions of the Build 10586.218 on a Lumia 525 in our hands-on demo video. You can read official changelog and known issues of Insider Build 10586.164 by clicking here.

Installation Experience:

The Installation experience is pretty smooth for the Build 10586.218 and depending upon the device, it took around 35 to 40 minutes for the build to get downloaded, installed, data migrated and the devices getting up and running. You will be usually notified for a restart when the download has completed in background. It may require up to 1.20 GB of free storage, though the update is about 705 MB in size. So, check the storage before you upgrade and you can check our tutorial on how to prepare for upgrade to Windows 10 Mobile.


The Build 10586.218 runs smoothly on Lumia 525. During our hands-on time with the build and as you can notice in the below video, It offered a very consistent and polished experience. It packs many fixes to bugs and issues faced by Insiders with the last Preview Build 10586.218. We checked the build for visible bugs and only bug we saw was start screen still missing the icon in multitasking UI. But apart from that some of the common bugs like App list background flickering, video play flickering etc were not present on Lumia 525. Check the video for more.

The build looks solid as a daily driver and it is difficult to find issues with this build at this point in time. We haven’t noticed any freezes or crashes so far, even nor for third-party apps. Coming to multitasking, Build 10586.218 feels even more impressive and you won’t see the dreaded resuming screen even on Lumia 525. Microsoft Edge too feels much sorted out and renders pages faster than before. Battery discharge rate is low and the battery life looks to be quite impressive with this build so far, though we haven’t had the build for even 24 hrs on our device.

We must mention that we haven’t done hard reset on our devices but we recommend if you are facing lots of issues. We will come back with more detailed info about Battery life and bugs, once we have used it for few days.

You can read our guide to fix commonly known Windows 10 Mobile upgrade, installation and usability issues.