According to iPhone 4S tech specs, iPhone 4S comes with improved battery life for talk time but worse standby time compared to iPhone 4, but when it comes to real world testing it may not be completely accurate.
Folks at iLounge have just published an extensive battery comparison of Apple's new iPhone and iPhone 4, which indicates that iPhone 4 has a much better battery life for 3G data and media compared to iPhone 4S.As you can see in the graph below, iPhone 4S battery life is worse when it comes to 3G data, audio playback, video playback and video recording, the battery life was almost the same for Wi-Fi and FaceTime and iPhone 4S battery life was slightly better for voice calls.
iLounge concludes:
While it’s easy to claim that you’ll probably still get around a day’s worth of use out of a fully charged iPhone 4S if you were used to getting that sort of life out of the iPhone 4, the reality’s not quite that simple. If you spend much of your day near a Wi-Fi network and only rely upon the iPhone 4S for web browsing and phone calling, you won’t notice a major difference—unless you’re thinking of switching to Sprint, in which case we’d be a little concerned. Similarly, if you use 3G data, plan to record or play videos, or want to listen to hours of audio during the day, you can expect greater battery drain from the iPhone 4S. Our advice for heavy iPhone users would be to keep a charger or spare battery pack handy during the day, as well as on trips.
Surprised by these test results? Let us know your experience in the comments.
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