After 24 hours.
The iPhone 5 looks like a quality product, I do believe however that those that associate quality with heft will be disappointed, I am not one who subscribes to this thought. In all respects the fit and finish of this phone IMHO, is superb. It feels very nice in the hand, my 4S felt really outdated, heavy and slab like compared to my S3 after only a couple of days, the iPhone 5 corrects this and feels up to date and comfortable.
I still have not got used to the smaller screen size, with my S3 the transition to a larger screen took less than a day, this is compounded by the fact that only a very few apps are ready for the larger screen on the iP5, I realise that this is a bit unfair on my part and that app developers will be working to upgrade their apps soonest, in particular, large companies like Sky TV in the UK should be looking to enhance an already good service with the larger screen real estate now available, Tapatalk will also benefit from taking advantage of the larger reading area.
I miss the back button more than I imagined I would. The lack of the simple feature of pulling down the notification bar to toggle wi fi, bluetooth etc on and off is also something that I find annoying. I miss widgets but this is not a deal breaker.
It is nice to have the Apple TV and 1 Password Pro app available on my phone again, the first being absent from Google playstore, the second being unworkable (for me) on Android.
Reception seems about the same with both devices, the same can be said about call quality.
It would be unfair to compare battery life as at the moment I am using it more than normal as I strive to get used to the phone.
I have only had this phone for 24 hours and fully recognise that all the above are criticisms of something that at the moment seem strange to me, the same can be said when I swapped my iP4S to my SGS3 and fully expect my findings over the coming weeks to change somewhat as the phone becomes more "normal" in my hand.