My past iPhones have gone quite a bit longer than 2 years with 24hr+ battery life. But that's probably because they start out with ~72hr battery life (under my

My past iPhones have gone quite a bit longer than 2 years with 24hr+ battery life. But that's probably because they start out with ~72hr battery life (under my use patterns, which are ~20min web browsing, average of a couple pictures or videos a day, nearly zero talk, ~30-40/day whatsapp or text messages, no Facebook or other social media, no gaming. Using navigation or other battery-hungry things cuts into that, of course.)