1. mj0's Avatar
    I've been using my Lumia 635 as daily driver for a couple of days now. Left my iPhone at home while trying not to break too many bones (and phones) at Enduromania, and decided to give Windows 10 Mobile 10166 a go. Short answer: don't do it, at least not on the 635. It's dead slow (the phone isn't the fastest to begin with but Windows 10 Mobile brings that phone to a screetching halt - Here Maps needs minutes (!) to launch, browsing the web is like it's 1995, the notification center takes about a second or two to appear, etc.), it crashes frequently (had to reboot due to different issues every single day), Microsoft Edge is just plain terrible (never thought it was possible to create something even worse than Internet Explorer), Skype calls drop all the time, etc. It's just not worth it yet, maybe it'll get better with time but right now if I were you I wouldn't touch Windows 10 Mobile with a 10ft pole.

    I was thinking about resetting the phone with Windows Phone Recovery Tool but since, if worst comes to worst and I do have an accident I may need a phone to call for help, I've decided to wait it out and live with these annoyances. My teammate has a Lumia 930 with Windows 8.1 Denim so at least we have one fully working phone for emergencies
    07-28-2015 03:48 PM
  2. Giddora's Avatar
    I've been using my Lumia 635 as daily driver for a couple of days now. Left my iPhone at home while trying not to break too many bones (and phones) at Enduromania, and decided to give Windows 10 Mobile 10166 a go. Short answer: don't do it, at least not on the 635. It's dead slow (the phone isn't the fastest to begin with but Windows 10 Mobile brings that phone to a screetching halt - Here Maps needs minutes (!) to launch, browsing the web is like it's 1995, the notification center takes about a second or two to appear, etc.), it crashes frequently (had to reboot due to different issues every single day), Microsoft Edge is just plain terrible (never thought it was possible to create something even worse than Internet Explorer), Skype calls drop all the time, etc. It's just not worth it yet, maybe it'll get better with time but right now if I were you I wouldn't touch Windows 10 Mobile with a 10ft pole.

    I was thinking about resetting the phone with Windows Phone Recovery Tool but since, if worst comes to worst and I do have an accident I may need a phone to call for help, I've decided to wait it out and live with these annoyances. My teammate has a Lumia 930 with Windows 8.1 Denim so at least we have one fully working phone for emergencies
    I suppose you have done a hard-reset on it? I've got a friend that runs it on his 635 without most of the things you have trouble with.
    xandros9 likes this.
    07-28-2015 04:02 PM
  3. Tim Stone's Avatar
    Do the restore from PC ... it is very fast and works great. I've gone back and forth testing Win 10 but it's just not ready for daily use ... yet. Get the benefit from 8.1 for now and try again with the next build. 10166 was a good step forward, but just not ready. You are also having to deal with Bluetooth issues ... under "repair" as noted by staff.
    07-28-2015 05:01 PM
  4. brad4560's Avatar
    I have been using the latest windows 10 build on my 635 with no issues (This is not my daily driver) I did do a hard rest after the upgrade
    07-28-2015 07:31 PM
  5. Saijin_Naib's Avatar
    I have been using the latest windows 10 build on my 635 with no issues (This is not my daily driver) I did do a hard rest after the upgrade
    This.

    I ran my L635 without a hard reset and it was an unmitigated nightmare. Slow, buggy, crashy, temperamental. Did the hard reset and it ran perfectly fine.
    k72 likes this.
    07-28-2015 09:09 PM
  6. mj0's Avatar
    Of course I did a hard reset after the upgrade, it was unusable before. It got better but still far from stable or usable.
    I'm not too dependent on this device since it will only be my daily driver for two more days. This was simply meant to be a warning.
    07-29-2015 01:58 PM
  7. drew_t's Avatar
    10166 is stable and usable on my 635. And, for whatever reason, the installation process for it went more smoothly than it did on my 640.
    07-31-2015 12:45 PM
  8. oneninertb's Avatar
    Dumb question. I too installed the Win 10 preview really liked it but found Edge almost unusable. I used the recovery tool to go back. I never thought of hard reset. So a hard reset with Win 10 installed won't revert me back to Win 8.1?
    08-02-2015 01:09 PM
  9. 2uiam's Avatar
    Dumb question. I too installed the Win 10 preview really liked it but found Edge almost unusable. I used the recovery tool to go back. I never thought of hard reset. So a hard reset with Win 10 installed won't revert me back to Win 8.1?
    No, you will still have Windows 10.
    oneninertb likes this.
    08-02-2015 01:13 PM
  10. oviedofreak82's Avatar
    I am running 10166 on my backup phone L635 & it runs great. It's very fast and fluid. The only issue I have is that I cannot set a custom background. Seems that was lost in between build 10149 & 10166. But it still works great. I've put my SIM card in and used it for a few days with no issues. I was tempted to pull the trigger on my 925, but reading about other users complaints, I think I'll wait.
    08-02-2015 01:45 PM
  11. nysink's Avatar
    Are you talking about the 0.5 GB RAM L635 or the 1GB RAM L635?
    08-06-2015 02:11 PM
  12. mj0's Avatar
    I'm running the original 512MB Lumia 635.
    08-07-2015 01:39 AM
  13. grumble69's Avatar
    Same here. I decided to be a guinea pig. I had a little bit of a problem getting Win 10 to install. But once I did, everything has gone just fine. No issues with it crawling along. It seems to be sync'n much better to my PC that also has Win 10 with regards to People and Maps. I was especially having problems with the latter in Win 8.1.

    The only thing I'm not liking are the tiles / icons. I wish I could turn the snap off, have more control over the appearance of the tile, and tweak the grid. ...and maybe you can, I'm still new at this.

    But for those holding off because of lag, I wouldn't let that hold you back. Seems just as fast as before. No crashes either.
    08-07-2015 02:13 PM

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