Having been a hardcore iPhone fan since back in 2009 when the 3GS was first released in Sweden, I think it may be time for me to move on. The iPhone 3GS was absolutely perfect back in the days, I really loved that phone. However, my iPhone 4S which I bought in november 2011 has been nothing but a disappointment, due to several reasons. It's really unstable, crashes apps every day, freezes every week, and the camera drains the battery completely while taking photos with flash - If I have anything less than 25 % battery left, a photo or two with flash causes the phone to die, showing nothing but a drained-battery icon. That said, my 4S has been really full of problems, and moreover I have gotten so bored with iOS. It's been nearly identical (minus new features) since I first bought my iPod Touch back in 2008. iOS is a great OS, and the iPhone is a great phone in general - but it's time for a change, and that's the end of that (IMO). That said, I was sure the Galaxy S4 would be the ideal phone for me. Having watched the presentation, seen photos online et.c., it looked like an amazing phone with specs on par. However, after seeing it IRL, I realized I actually could not stand the plastic-fantastic feel of the phone, or the UI of Samsung TouchWiz. That said, I was pretty disappointed. I also considered the Xperia Z but never really fell in love with the design, moreover it was a bit too big for my preferences. ...So I figured I'd just stay with my troublesome 4S till something better arrived. But then I walked passed a stand showcasing the HTC One (which has been unavailable in every other store) in a local phone house, and my god - this is something else! I was seriously impressed! The build quality was up to Apple standards, definitely the same or even better than the iPhone, and the fit and finish absolutely great. The phone lied perfectly in my hand, and the 4.7" size seemed like the perfect compromise. So I started using the phone, and was even more impressed. HTC Sense is absolutely nothing like the clutterful, disintegrated (that's how I experienced it) TouchWiz. Sense just felt so refreshing, and the design/style of the interface was really great. Moreover, there was no lag what so ever, it was all so fluid/responsive, very much unlike the laggy GS4 I had previously tested. The HTC One left me more impressed than I have been by any other phone since the release of the iPhone here in Sweden. I feel that for me, the HTC One is everything that I would have wanted the iPhone 5 to have been! I'm now absolutely sure that I want the phone - however I have a few worries which I hope some of you would be able to answer. First of all, I'm not worried by losing out on iMessage, Photostream, Airplay or any of those features. However, I use iCal a lot. My University has a shared iCal stream where any events/classes are automatically updated in my iCal on my Macs and on my iPhone. Would I be able to subscribe to the same iCal calendar on a HTC One? (This is of quite big importance to me). The other worry I have is about the camera - The thing about the iPhone 4S is that it actually has a great camera (when mine's working..) that I frequently use to take pictures with. I do not print the photos in large resolutions, I do not even use them as wallpaper material on my computers, only on my phone - however I use Facebook and Instagram a lot and really appreciate good quality. I shoot everything from cars, events, people, et.c. with my phone - and I would prefer if the quality from the HTC One was not really any worse than my 4S. Do you think I will experience lower quality photos from the HTC One Ultrapixel camera than from the iPhone 4S? Last but not least - I tend to keep my devices for a while - I kept the 3GS for 2 years, my 4S is now 1,5 years old, and I would very much like to keep that trend going. I am aware of the fact that I won't be getting as many updates on Android as with iOS, but in terms of durability of the phone - is it likely to last 2 years? Or do I risk experiencing slow-downs, or a phone which becomes laggy and unresponsive by time? What's people's experiences with previous HTC devices, or the HTC One? (I know it hasn't been out for long..) Thanks in advance! I hope to be able to join you One-owners out there soon, although I may just wait for WWDC before deciding.