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According to U.K. consumer group Which?, in tests of nine iPhone models, all of them fell short of Apple's battery life claims by between 18 and 51 percent.
The group carried out tests to determine average talk time for a range of models, including the iPhone XR, which had the biggest overestimation for talk time on a full charge. In Which? tests, it lasted for 16 hours and 32 minutes — whereas Apple said it would last 25 hours.
"With mobile phones now an essential part of everyday life, we should be able to count on our handsets living up to the manufacturer's claims," said Natalie Hitchins, Which? head of home products and services, in a statement.
"There are clearly questions here around how long some mobile phone batteries will last and so it's important to make sure you find an independent source of reliable information when buying your next phone," Hitchins added.
[...] Apple disputed the results in a statement to Business Insider.
"We rigorously test our products and stand behind our battery life claims. With tight integration between hardware and software, iPhone is engineered to intelligently manage power usage to maximize battery life. Our testing methodology reflects that intelligence. Which? haven't shared their methodology with us so we can't compare their results to ours. We share our methodology for testing which we publish in detail here."
(Score: 2) by urza9814 on Tuesday May 07 2019, @06:20PM
There's one EXTREMELY important point that's missing from the summary IMO; it probably got forgotten in the rush to bash Apple (not that I mind some properly justified Apple bashing...):
Without that statement, the only conclusion that we can draw is that Apple and Which? use different testing methodologies. That's it. Can't say that Apple exaggerates, can't say if Which? is using particularly unrealistic tests, can't say much of anything. But WITH that statement, we can at least conclude that Apple exaggerates more than other manufacturers. Maybe everyone exaggerates and Which? just sucks at testing; maybe it's the other way around; but you can at least conclude that if you're comparing a Samsung against an iPhone you can multiply the battery life figures from the Samsung by ~1.3 to get an accurate comparison.
Now I wonder how hard it would be to build a browser plugin which automatically applies the relevant conversion factor to phone battery life specifications so that you can get a fair comparison of the specs between different devices...