A test to pit the two different iPhone 6s models against each other — one with a TSMC chip and the other with a Samsung chip — has officially debunked Chipgate. It turns out there are no discernible differences in battery life between the two.
Consumer Reports acquired an iPhone 6s with an A9 chip made from TSMC and another from Samsung. They made sure all settings were equal on both devices including the carrier, brightness settings, wireless connections, iOS version, running apps and more. Then they got to work.