Apple seems to be having a bit of a quality meltdown.
This isn't the first one, just the first after they became the big company they are today.
Classic Mac users can tell you all about what a disaster Apple quality was in the late 1990s into the early 2000s (including the first iPods, which died within six months).
iMacs that would blow their power converters inside 24 months.
iBooks with logic boards that fry after 14 months.
PowerBooks with hinges that would crack in half.
Titanium PowerBooks with paint that would bubble and peel off within six weeks of ownership.
Aluminum PowerBooks that would get so hot the cases would warp and you could rock it on your desk with a finger.
PowerMac G4 cubes that would overheat and crack their cases.
Back then, it was a much smaller business and most complaints stayed "inside the family." Many people took big losses to stick with Apple. After my TiBook caught fire (no joke -- the motherboard literally fried itself) and Apple wouldn't fix it, I gave up on Apple for a long time.
I have a Mac now, but mostly run Windows on it except for web browsing.
This iPhone 5 launch sounds like the TiBook paint or distorting aluminum PowerBook fiasco, but on a massive scale. And this time, it's not loyal cultists like I used to be who are willing to "take one for the team." People expect their high-end Apple stuff to work flawlessly, and will hop to something else in a heartbeat if they believe it is better.
They've got a LOT of work to do, ASAP, to hold their position in the market.