I've been following this discussion for a while. Most of the people reading this thread are presumably experiencing poor battery performance, either compared to the iPhone 4/4S or compared to other phones, or just general frustration from not being able to go an entire day without recharging.
Maybe I'm just lucky.....or maybe it's partly because I don't usually spend a ton of time on voice calls (normally less than an hour a day), but I feel like I'm getting pretty decent battery performance from my iPhone 5, pretty close to its stated specs. I'm running iOS 6.1.2, and it appears that many people felt that 6.1.3 really affected their battery life (latest is 6.1.4, which included a speakerphone upgrade), so maybe that's another factor in my favor.
I think it would be interesting for other people to weigh in with usage stats for their phone, including some basics about their usage habits, iOS version, and general settings (push vs. fetch email, average amount of talk time, etc.)
On my best days, I get at least 9 hours of usage and about 30 hours of standby time. On days where I spend more than an hour on voice calls and/or use a lot of video, that drops to around 7.5 or 8 hours of usage and around 20-24 hours standby. From what I gather, my experience is a lot better than what some of you are getting. But even on the heaviest days of use, I can't imagine ever having a problem easily making it to bedtime if I started with a full charge that morning. I fetch email every 30 minutes, and I have Location Services turned off for everything except map apps, Safari, Siri, Find My Phone, and Google. I keep push on for things like Facebook. Most of my data usage is via WiFi, so that probably helps some...maybe a lot.
Curious to hear what other folks are getting....surely I'm not the only one satisfied with my battery life???
People that are reporting like 3-4 hours of usage....are you running constant video via cellular or spending 4+ hours on voice calls?