Having read the majority of "is the iPhone 5 battery life good / bad / whatever" threads, I just wanted to say that one reason to sell my HTC One X that I had since May and after my iPhone 4 lock button decided to stop working was the experience that with all my iPhones (Original, 3GS, 4) I made it through an office day with medium usage without having to charge in the office. In order to achieve this with the HTC One X (lovely phone btw, no offence) I had to switch off all background syncing, GPS etc and still after 100% charge in the morning got home at 6pm with only 15-20% charge left or nothing if I used it for more than 3hrs that day (just browsing, twitter and email, no heavy gaming that is!). Same experience with other Android phones I owned btw. And yes, the HTC One X screen is 0.7 inch bigger and it has two more cores, but I frankly don't care! If a phone is not capable of surviving an 10hr work day with medium usage (3-5hrs browsing, texting and some calls) it is unusable. With the iPhone 5 I don't use LTE (as my provider doesn't offer it) and have Gmail switched to 15mins manual download (don't really need push) and got home with 50% yesterday after medium usage through the day. So for me, this is just another reason why the iPhone 5 is a great phone!