My HTC one M8 got smashed and I "upgraded" to a 950. To say WM10 is riddled with bugs is being kind at best. Crashes. Oh so many crashes. Failure to resume Bluetooth playing after being read a text, sometimes because Groove has crashed. Crashing while trying to select ringtones/alert sounds. Crashing out of messaging app when inserting pictures. Freezing on "resuming" when trying to move between apps. Live tile update failures. Incorrect treatment of apps installed on SD cards, including sporadic loss of app icons which cannot be retrieved without reinstalling and in some cases having go format the SD card. Allowance of installation of apps to SD cards that are not allowed to be installed on SD cards, which of course causes crashes. Failure to format SD card during reset despite being asked if I wanted to do so, which results in a message stating there are apps on the card from another system. Settings not being retained. I've had several cases of video that seems to be recorded OK but when you view it, it has frozen during recording in various parts, leading to useless video. Calendar snooze never reminds you again. Cortana reminders happen "kinda close" to the target time but not on time (almost got a parking ticket because of that.) I'm not sure how you can use 10 and not see this stuff. And as for the "not ready for all equipment" argument, this is MSFT's flagship product, so of all the devices out there, this one should aboslutely work.
Because the screen resolution is ridiculously high on this phone, everything is so small it is hard to even use. I have perfect close vision, and it is a strain to see what the heck everything says. Hardware is not an OS problem obviously, but how the OS handles it is. Try to use some of the scaling options; display scaling, maybe Ease of Access? Forget it. Fonts don't scale across apps consistently, or even the OS itself; some items become huge while some remain tiny. The dialog boxes and buttons don't draw correctly, fonts spill out and are cut off. In some cases button icons are completely missing (like when inserting pictures into messaging - you only see a circle with an X "placeholder" for both the "Checkmark" and "cancel" buttons.
I don't want to start a debate about how the UI of 10 is a billion steps backwards from 8.1. But just taking into account simple things like no longer being able to use the phone with one hand because of the hamburgers, coupled with these other problems, make this phone unusable. I actually thought I got a defective one and returned it for an exchange; the new one is exactly the same. I've had to reset this thing 4 times and I've only had it a week and a half. Which also doesn't always work because it can't disable reset protection. Forget about restoring as well, it has never done it successfully; I have to delete it from my device list each time to get it to set up correctly.
I've been with WP since 7.5. This is my 4th WP device (6th if you count my wife's), but if it was my first, I would never have gotten another. This is a flagship phone. Unacceptable. WM 10 is a disaster. Everything that made me love WP, and made my friends with iOS and Android jealous of it, is now gone. I'll be returning this POS and trying to find a surplus or used WP 8.1 device.:unhappy: