If your network beacons are ever so slightly different, e.g. different routers, settings, etc. then some devices will refuse to roam (e.g. Galaxy S3) some devices will cut out while roaming (e.g. Galaxy S5) and some won't care much at all (e.g. Intel 6300) and some might not care but should and roams when it shouldn't and ends up with a dead connection (e.g. some shit I had to troubleshoot, can't remember which)
Heh, as does some sort of invisible, undocumented, auto-rollback feature
The initial upgrade got stuck at the rebooting screen for like, 4 hours. After which I got bored and force rebooted it, after 3 times it decided to rollback the upgrade.
There wasn't any option to cancel, abort, or rollback manually, none of the startup menu entries worked, it was just out of sheer luck and frustration that it turns out hitting the reset button repeatedly makes it rollback
"The Electoral Commission said a record 46.5 million people registered to vote. The question on the ballot paper was: "Should the United Kingdom remain a member of the European Union or leave the European Union?" The side that gets more than 50% of the votes will win.*" --- (irregardless of the outcome)