Ok so I am looking forward to iOS 7 and have patiently waited (like a 5 year old) for iOS7 but the thing is I am on call for work for the next 2 weeks and I don't really want to wait another 2 weeks. So I have to balance my unnecessary excitement with the risk of something breaking which would render my phone useless either during the upgrade or after. So I think I can get around the first part of the problem (of it breaking during the upgrade) by upgrading whilst I am at work, if it breaks, I run out and buy another phone. But at what time will the update be released? Will the servers be under so much load my download speed will be that of a snail? The second point, what are the chances of some as yet unknown bug randomly making the phone crash / turn off / phone feature stop working? Has there been any precedent for this happening?