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iCloud: Great for document sharing, but awful for sync
(Image, screenshot: ZDNet)
With iCloud, you can work on a document on your Mac and instantly switch to your iPad or iPhone. You can also sync your contacts and calendars. Except many can't, or won't. The problem with sync is that you can never tell whether something will be overwritten or not, or which 'wins' — the server or the device. The upshots of iCloud are negated by its failure to work half the time. Contacts in particular go everywhere, duplicate, or simply fail to sync.
App icons don't reflect what's going on
Feel sorry for those in the rainy climes of Seattle, London, Helsinki, or anywhere in Russia during the winter months. For iPhone owners, it's permanently sunny and a hearty 73°F. Except it's not. It's cold and windy, and it hasn't stopped raining in days. If Windows Phone devices can update their app tiles automatically, why can't iPhones and iPads simply reflect what the actual weather is without opening the app? So many examples, so little time. And by the way, it's not 10:15, as so the clock says — except maybe twice a day.
iTunes is clunky, confusing, and conflicts with Music
When was the last time you used iTunes, the version on your iPhone? Likely "rarely" or "never." Yes, you can download music and video on the go and this should be its sole purpose, so why not wrap it into the App Store, or wrap the App Store into iTunes? It seems redundant and rarely used. Music is where you listen to your, well, music.