So, here's my full list of bugs and feedback for improving Windows 10 Mobile starting from Build 10166 (I'm testing it on a Lumia 920):
Windows 10 Mobile Build 10166 - BUGS AND FEEDBACK LIST:
UPGRADE NIGHTMARE:
- Upgrading from WP8.1 takes very long time, almost 2 hours before I logged in W10M Start Screen on my Lumia 920;
- Upgrading from WP8.1 generates a Start Screen bug where it took very long time for it to load-up. "Resuming..." took an average of 20-30 seconds before Start Screen to load, even after quitting a simple app by pressing Home or Back button;
- Upgrading from WP8.1 generates a very major "Battery Drain" bug where phone doesn't keep charge when plugged in to AC, and become extremely hot all the time;
- Upgrading from 8.1 downgrade Firmware version from Denim to Cyan;
- Lag, slowdowns, crashes and many bugs stayed even after 24 hours of the phone let alone doing its things, and settling down;
- SO: Upgrading as a whole was a very painful process from 8.1 to 10166, and the only solution for the problems above (and many other quirks and oddness) was in the end an HARD-RESET of the device, WITHOUT restoring an old Backup, but starting new. Very annoying and time consuming;
- PLEASE IMPROVE UPGRADE EXPERIENCE: Both from WP8.1 -> W10M, and from Old W10M build -> to new W10M. Always doing Hard Reset after an upgrade is NOT acceptable.
HARD RESET + NO BACKUP = PERSISTENT PROBLEMS:
- People app live tiles doesn't work (no circles, only static logo);
- New Store often close itself or open 2 times;
- Edge crashes a bit too often;
- Edge doesn't have "Google" search engine option instead of Bing;
- Glance is not present in the "Extras" section. It can be opened from Store only;
- Glance shows time only, no date or notifications even if enabled;
- When clicking the Power button to wake the phone, there is bad flickering showing Start Screen for a brief second, and only after Lock Screen appears;
- Unlocking from Lock Screen still requires 3-4 seconds to show Start Screen (while on black screen);
- HERE Transit isn't available in store;
- Italian new "Maps" doesn't have public transport support, only on foot + car. HERE still has it instead;
- Swiping to "All apps" list, and then back to Start Screen reload Background (with transparent tiles) and lags;
- Live Tiles often flickers and/or not update themselves;
- Swiping down the Action Center has a lag/delay of 2 seconds before it shows;
- Alarms do not work: result -> this morning I was late at work. Damn you Ms!
- For no apparent reason: ringtones and audio stop working completely. No sounds at all, and I have to reboot the phone;
- Calendar Live Tiles doesn't update itself;
- SMS app periodically crashes;
- Bad radio signal ("3" Operator, Italy);
- Performance is sometime faster than 8.1.2, sometime lags a lot more. More optimization needed;
- Phone sometime reboots itself for no apparent reason;
- New Outlook app is slow to open, and hangs;
- LinkedIn is no more integrated in People App.
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