It's important to know that this A1634 iPhone 6s Plus model supports LTE bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, and 30, plus TD-LTE bands 38, 39, 40, and 41. Designed for numerous US carriers, it was sold with an optional AT&T lock, but also offered unlocked, contract-free, and without a pre-installed nano-SIM for use on nearly any carrier (like T-Mobile, Verizon, and Sprint) starting October 8, 2015.
All iPhone 6s Plus models feature a 5.5-inch widescreen, pressure-sensitive "3D Touch" LED-backlit "Retina HD" display with a 1920x1080 resolution (401 ppi) and an "IPS technology and a taptic engine." They have dual cameras. The rear 12-megapixel, 4K "iSight" camera offers 1.22-micron pixels, an f/2.2 aperture, simultaneous 4K video and 8-megapixel still capture, and optical image stabilization for both photos and video. The front 5-megapixel, 720p "FaceTime" camera is more basic.
The iPhone 6s Plus is built with a 7000 series aluminum body and comes in four metallic colors: "silver" (white front, silver back), "gold" (white front, gold back), "space" gray (black front, gray back), and "rose gold" (white front, pink-tinted gold back). It also has a second-generation "Touch ID" fingerprint sensor in the home button.
Powered by a 64-bit 1.85 GHz "Apple A9" processor, the iPhone 6s Plus has 2 GB of LPDDR3 RAM and was available with 16, 32, 64, or 128 GB of storage (16 GB and 64 GB options were replaced by a 32 GB option on September 7, 2016). It supports 802.11a/b/g/n/ac Wi-Fi with MIMO, Bluetooth 4.2, LTE (4G), and NFC for Apple Pay. It includes a bottom-mounted headphone jack and a "Lightning" port.
Apple's battery life figures are up to 80 hours of audio, 12 hours of 3G talk time, 12 hours of 3G or LTE internet use, 12 hours of Wi-Fi internet use, 14 hours of video playback, and up to 16 days of standby.
In the US, this iPhone 6s Plus was initially available for US$299 (16 GB), US$399 (64 GB), or US$499 (128 GB) with a two-year subsidized contract, or unlocked and contract-free for US$749, US$849, or US$949. Apple also provided a one-year "iPhone Upgrade Program" lease, requiring a trade-in, for US$37.45, US$42.45, or US$47.45 per month (excluding service costs).