iPhone 6 / 6S / 6S Plus

Released in 2015, the iPhone 6 and 6S were similar phones with a major difference: screen size. The iPhone 6S offered a standard 4.7-inch display, while the 6S Plus went big with a 5.5-inch option. Both phones got a performance boost with the A9 chip and introduced 3D Touch for pressure-sensitive controls. Cameras improved to 12 megapixels on the rear and 5 megapixels on the front, with the 6S Plus adding optical image stabilization for video. Ultimately, the choice came down to screen size and battery life (better on the Plus). However, all three phones are quite dated by todays standards and likely wont receive the latest software updates.