The Apple iPhone 6 also has no 4K video recording capability and its video sound is still mono. It also lacks the optical image stabilization of the iPhone 6 Plus. It also has no enhanced resistance to liquids or dust while its NFC functionality is limited to Apple Pay.
Overall, the Apple iPhone 6 is rather pricey for a flagship smartphone, especially when being offered without carrier subsidies. That is actually the reason why it fell short of the competition, particularly its Android counterparts, which already offers stereo speakers, wireless charging, an infrared port, or FM radio as early as late in 2013.
The Apple iPhone 6 has left the feature gap wide open which denied the American tech giant of its usual excuse that they do not go with the tide of the competition but do it their way. Apparently, Apple has eaten the humble pie when it made the screen size bigger but it still did not do anything relevant with regards to waterproofing, 4K videos, lossless video zoom, OIS, high-res imaging, and stereo speakers.
It was actually the Apple iPhones which drove the Android competition development of features upon features in the hope that they can steal users from the superior ecosystem and user-friendly experience of the iPhones, especially with the advent of the iOS 8 back then. But Apple seems to have admitted a mistake in its screen size when it finally joined the bandwagon of the Android big-screen smartphones.