Windows 10 Mobile Insider Preview Build 15252 Available for Download

UPDATE: Release of Windows 10 Insider Preview build 15252 for mobiles.

NOTE: These are testing builds of Windows 10 Mobile Insider Preview officially released by Microsoft. These builds are under development and testing phase and may contain bugs, issues and other problems. They may also make your phone not bootable in some rare situations. So install and use these builds at your own risk. If something goes wrong, you can try to repair your phone by restoring default firmware using Windows Phone Recovery Tool.

If you are using Windows 10 Insider Preview (previously known as Technical Preview) for mobile phones, here is a good news for you.

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Microsoft has released a new build 15252 of Windows 10 Insider Preview for mobile phones. This build comes with fixes for many issues which are as following:

What’s New in Latest Windows 10 Mobile Insider Preview Build?

Following are the new features, improvements and fixes in this new build:

  • This build includes all the improvements from KB4038788.
  • In preparation for the release of the Windows 10 Fall Creators Update, the product version number has been updated to 1709 just like PC.
  • Fixed an issue where, on powering the screen off/on, high demand for CPU could cause several apps to crash. Background processing of photos is an example of high CPU demand. In a photo shoot session, you may have seen the Camera app crash.
  • Fixed an issue with the Messaging app where conversation text was displayed incorrectly.

List of Supported Mobile Phones to Install Windows 10 Mobile Preview

At the moment you can install Windows 10 Insider Preview build in following mobile phones only:

  • HP Elite x3
  • Microsoft Lumia 550
  • Microsoft Lumia 640/640XL
  • Microsoft Lumia 650
  • Microsoft Lumia 950/950 XL
  • Alcatel IDOL 4S
  • Alcatel OneTouch Fierce XL
  • SoftBank 503LV
  • VAIO Phone Biz
  • MouseComputer MADOSMA Q601
  • Trinity NuAns NEO

Some mobile phones are still not supported in this build. But Microsoft is working hard to make Windows 10 Insider Preview build to support all the remaining Lumia and non-Lumia phones.

How to Install or Upgrade to New Windows 10 Mobile Insider Preview Build?

If you are already using Windows 10 Insider Preview in your phone, you can update to this new build by following these simple steps:

  • Open Settings app and go to Update & Recovery
  • Now open Phone Update and then tap on Check for Updates option

Now it’ll automatically check for new updates and will install the new build in your mobile phone.

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Please note that this new build is only available on Fast ring. If you want to change from Fast ring to Slow ring or vice versa, open Windows Insider app in your phone, login with your Microsoft account and then change ring settings.

If you are not using Windows 10 Insider Preview in your phone but want to try the new build, you can install it in your phone with the help of following tutorial:

Download Windows 10 Insider (Technical) Preview for Mobile Phones

Windows Phone users who are using the Insider Preview build, must install this new update build to experience the new features and more stability…

Published in: Mobiles and Internet, Windows 10

About the author: Vishal Gupta (also known as VG) has been awarded with Microsoft MVP (Most Valuable Professional) award. He holds Masters degree in Computer Applications (MCA). He has written several tech articles for popular newspapers and magazines and has also appeared in tech shows on various TV channels.

Comments

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  1. microsoft lumia 540 windows 10 build 14327.1000 not working wifi and mobile data and hotspot and data uses after switch off mobile

  2. just update my lumia 535 on latest insider build 14327.100 only issues camera not working but using old Lumia camera app will do, double apps. hope this issues will be fixed soon.

  3. Hey all you older (the phone, not you) Lumia users with the battery/heat issues… I am right there with ya. Try turning off your GPS radio (i.e., turn off location services) entirely. This *appears* to have settled my unit down, and I was having hella time even getting it to restart or charge because I had let it drain so low and get so hot. Obviously this is not a fix but it might at least get you functioning again long enough to flashback or even live with it while a fix is prepped. Please everybody having this issue log it with Feedback Hub.

  4. For my 640XL this build is a serious step back in reliability and energy consuming.
    Almost any memory-demanding app just crashes on startup. This is about skype (always), edge (on heavy sites), facebook (when scrolling down to load more data) etc. I cannot even send a feedback from my phone – the app also crashes.
    Before I could live from 2 to 3 days without charging my phone. With this build I need to charge it TWO TIMES EVERY DAY! Most consuming apps are: lock screen, start and phone.
    For lock-screen I tried to switch all notifications off – but no improvement: it still eats the battery more than any other app.

    If there is no update in the next day or two – I’ll have to switch back to Windows 8.1

  5. BLU Win JR LTE India Version also received Windows 10 Mobile update by saturday(28-4-2016).

  6. Upgraded Windows 10 on Lumia 640 XL DS but can’t unlock my phone because there is no keypad ..it exists for SIM PIN but doesn’t after that..S.O.S.!!!

  7. I feel the pain described here with some of these 14xxx builds. I had the battery drain issue big time, but with this current build (14361.0) it seems much better. The problem for me which has been consistent is the live tiles not being so live – with all the 14xxx builds. Mail & calendar to not perform the way they used to previously. Meaning – mail used to update the tile immediately when I did something with the message showing up on the tile. Calendar always went to the next event when it was coming up shortly. Neither works the way it used to. Anyone else see this issue?

  8. why was the call recorder button, available during a phone call, removed in the latest releases?

  9. I’ve just installed Win 10 on my BLU Win Jr Lite but cannot log into my phone.

    It asked me for my PIN which I entered repeatedly. It then said I’ve entered my PIN too many times and asks me to reset my device. I have done this many times but I still receive vet the message.

    I’ve done a hard reset but still no luck.

    Can anybody help please.

  10. After this update this morning, my Lumia 1520 won’t start. Only the three buttons light but the screen is blank. How do I move from here?

  11. With the latest build we are no longer able to enroll devices to our MDM system.
    the Settings – Accounts – Work Access has been removed.

    Anybody know how to get it back?

  12. i am using lumia 525 and i update windows 10 mobile preview when i’m update it my mobile 3G is not working i’ update build 494

  13. I’m a developer/tester myself, so I know that the testing processes sometimes don’t detect everything we should.
    Anyway, I think that you, MS is doing a very bad job at this. After this update, my 830 is constantly rebooting, doesn’t detect the SIM card, can’t write anywhere (tried OneNote and Edge), the battery is consuming rapidly, and that’s what I found in just 5 minutes.

    A few months ago, it was the Bluetooth incorrect detection of my Band.

    If a phone doesn’t get to work as a PHONE, then it’s useless. Have you ever done a Windows desktop OS build that couldn’t even boot???

    You should really, really wake up, and come up with testing that really works. A nightly build with no sufficient testing is not enough, because when the user, me, wakes up in the morning and the “!#$#”$% alarm doesn’t even work (it was supposed to update from 0100 to 0500, not from 0100 to 0600), and you end up having to call the office saying ‘oops, I’ll be late’, but you can’t because the #$%#$% sim card is not detected, well, then you might have ruined my day.

    Be responsible in your work.

  14. after update Windows 10 Build 14926 my mobile switch off and now I could not unlock my phone please fix this problem

  15. After the latest update on my lumia 535 it doesnt appear the keypad on lock screen to unlock the phone… thanks!

  16. Upgraded Windows 10 on Lumia 640 but can’t unlock my phone because there is no keypad (can’t enter PIN). Now I can’t use my phone

  17. Many people are facing No SIM card error and no keypad issues. Microsoft is aware of the issue. Check following topic:

    answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_call/no-sim-message-after-installing-mobile-build-14926/02f63d24-3331-4b10-99ec-a49602ec2743?page=1&auth=1

    Hard resetting the device may fix the issue:

    answers.microsoft.com/en-us/mobiledevices/wiki/mdlumia-mdsettings/how-to-soft-and-hard-reset-your-windows-phone/4ec36474-c21e-4aec-ad1b-30f3afaf824d

  18. This build did what Build 14371 did to my laptop- brick my Start Menu and Action Center. Had to create a new account and manually migrate all my files to the new profile.
    Thankfully, a quick restore to previous build restored everything.
    Unfortunately, they didn’t add the little piece of info about expiring builds as a notification before electing to update. Now, until I can actually update to this, or another build, I have to contend with that annoying pop-up about my build expiring in 10 days.
    Can I drop out of receiving Insider builds? Coz what started out as fun is becoming hell.

  19. I have updated my lumia 1520 to windows 10. And my OS build is 10.0.10586.545, since my last update to this, I’m not able to get any update on my phone. I have been checking always.

  20. Build 14955 on Lumia 950 – uh, what happened to my volume controls? I can hear with headphones and have volume adjustment for headphones when they’re plugged in and when they are not plugged in I can still adjust headphone volume. Headphones attached or not, I cannot adjust regular phone volume. Weird.

  21. Since the last update the Podcast app seems to pause whenever its not “on Screen” if you focus away (change app) or the phone lock screen kicks in the playback pauses…

  22. After the update many a times it happen, That my device don’t wake up after pressing lock key and ultimately i have restart. The phone is not able to boot if the memory card is in slot. And after this update my phone is not able to read memory card .

  23. Stay away from this build, especially if you have a Lumia 950 (XL). It occasionally reboots, locks and reboot. This is the first horrible build I got.

  24. DUAL SIM mode in Lumia 730 stopped working with this build 15007 (and 14977 too). Urgent fix needed!!

  25. After latest update (15063.138) on Lumia 950 the email notifications are gone (sound, vibrate, notification center) for two gmail accounts . Only the live tile shows the new emails. The Outlook account notifications works fine. On a Lumia 735 everything is okay with the same build.

  26. I am presently using Lumia 520.I was using technical preview of windows 10 on my lumia phone.Yesterday i restored it and again fresh installed my phone using lumia recovery tool.I have now updated windows 8.1 on my phone with OS version 8.10.14219.341.Now i again want to use windows 10 technical preview.I tried to update my phone using Windows Insider app as i am already registered and followed all the steps but the updates are not coming.It says that my phone is up to date.I am still on windows 8.1 version.I tried in every ring slow and fast but it still isnt working.Help me with this.

    Please help

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