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iPhone 6s Battery Life Differs Between Samsung, TSMC A9 Models: Reports

iPhone 6s Battery Life Differs Between Samsung, TSMC A9 Models: Reports

By Ketan Pratap | Updated: 9 October 2015 15:15 IST

Apple's new iPhone 6s and iPhone 6s Plus are again in the news due to a difference in performance between the models featuring different makes of the new 64-bit A9 chips. According to a couple of YouTube videos, iPhone 6s models that ship with TSMC A9 chips offer better overall battery performance than the ones that ship with Samsung A9 chips.

Apple however has defended its A9 chips manufactured by Samsung and TSMC claiming that both the chips "vary within just 2-3 percent of each other."

The news that A9 chips in the new iPhones were shipped by two different companies was first reported by Chipworks, pointing out that the TSMC chip is built on a 16nm process, and the Samsung chip is built on the 14nm process. Despite the 14nm process being expected to yield better efficiency, it turns out this may not be the case. YouTube videos by Austin Evans and Jonathan Morrison in limited tests showed the Samsung-powered iPhone 6s delivering worse battery life.

Jonathan Morrison performed some tests including shooting at 4K resolution, exporting the 4K video in iMovie, and also ran some benchmark tests. In Morrison's video, iPhone 6s with TSMC chips had 62 percent after all the tests were done. While the one with Samsung chip was at 55 percent. To note that all the tests were performed when iPhone 6s was at 100 percent battery.

Austin Evans, on the other hand, had a different approach towards the tests with iPhone 6s. Evans ran a battery test on the two iPhone 6s models powered by Samsung A9 and TSMC A9 chips, checking which phone drained fast to reach 50 percent mark. According to the results, the TSMC powered iPhone 6s lasted 50 minutes longer than the one powered by Samsung chip. He also played a one-hour-long streaming video on the both the models and saw a marginal difference of 1 percent.

After checking both the tests however, we can say that the real world results might be marginal.

Apple in a statement to TechCrunch has also defended the chips and said, "Certain manufactured lab tests which run the processors with a continuous heavy workload until the battery depletes are not representative of real-world usage, since they spend an unrealistic amount of time at the highest CPU performance state. It's a misleading way to measure real-world battery life. Our testing and customer data show the actual battery life of the iPhone 6s and iPhone 6s Plus, even taking into account variable component differences, vary within just 2-3 percent of each other."

It's worth noting that both the videos showed YouTubers using a Lirum app to check the A9 chip manufacturer. The developer of the Lirum app, Lirum Labs Tecnologia, on Thursday pulled its app from App Store claiming that there are some "some serious issues" with its app. It said in Facebook post, "We are aware of some serious issues or our Apps with the latest iOS models (iPhone 6s and iPad Air 2). Changes on the requirements for a new update to be approved are also delaying the development process (and our team is very small). In face of such events, in 24 hours, we will take Lirum Device Info down from the App Store - until we can release a decent update. That will take a few months however - but then we promise an entire new user interface, faster updates when a new device model is released, and a lot of new features."

Soon after Apple started shipping its iPhone 6s and iPhone 6s Plus, users reported various issues including Touch ID getting heated alongside incidents of iPhones abruptly switching off and other complains about speakers, and volume controls. Despite several users reporting about certain issues in the iPhone 6s and iPhone 6s Plus, Apple claimed record weekend sales with over 13 million new iPhone units sold topping last year's 10 million units sold during the opening weekend.

Apple iPhone 6s

REVIEW
KEY SPECS
NEWS
Variants

Design
Display
Software
Performance
Battery Life
Camera
Value for Money

Good
Great design
Fantastic performance
3D Touch enables new UI paradigms
Retina Flash on the front is great

Bad
Touch ID is too fast!
16GB storage in base variant
Expensive
Battery life could be better

Read detailed Apple iPhone 6s review

Display 4.70-inch

Processor Apple A9

Front Camera 5-megapixel

Rear Camera 12-megapixel

RAM 2GB

Storage 16GB

Battery Capacity 1715mAh

OS iOS 9

Resolution 750x1334 pixels

More Apple mobiles Apple mobiles price in India

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Further reading: A9, Apple, Mobiles, Samsung, TSMC, iPhone, iPhone 6s, iPhone 6s Plus

Ketan Pratap

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Ketan Pratap is the editor at Gadgets 360 - with over 12 years of experience covering the technology domain. With a breadth and depth of knowledge in the field, he's done extensive work across news, features, reviews, and opinion pieces. But what's truly inspiring about Ketan is how he spends his free time. He's often found gazing at snow-capped mountains from over 20,000 feet while sitting on the hood of his car, taking in the breathtaking beauty of nature. His passion for the great ...More