Inbuilt storage options on the Pixel 3 are 64GB and 128GB; OnePlus 6 comes with 64GB, 128GB, and 256GB storage optoins; and the Samsung Galaxy Note 9 is available in 64GB and 512GB storage options. The iPhone XS is sold in 64GB, 256GB, and 512GB storage models.
In the camera department, the Google Pixel 3 sports a single 12.2-megapixel dual-pixel rear camera with 1.4-micron pixel size, f/1.8 aperture, and a 76-degree field-of-view. It also comes with features such as 4K videos at 30fps, dual pixel phase detection, optical and electronic image stabilisation, spectral and flicker sensor. The OnePlus 6 sports a dual rear camera setup with a primary 16-megapixel Sony IMX519 sensor with 1.22-micron pixel size, f/1.7 aperture, OIS, and EIS. The secondary 20-megapixel Sony IMX376K sensor comes with 1-micron pixel size and f/1.7 aperture. The iPhone XS also sports a dual rear camera setup with a primary 12-megapixel wide-angle sensor (f/1.8 aperture) and a secondary 12-megapixel telephoto sensor (f/2.4 aperture), both coupled with 2x optical zoom and a 6-element lens. The Samsung Galaxy Note 9 also has a dual rear camera module with a wide-angle super speed dual pixel 12-megapixel primary sensor (variable aperture between f/1.5-f/2.4) and another 12-megapixel secondary telephoto sensor with 2x optical zoom, 10x digital zoom, and f/2.4 aperture.
The selfie camera setup on the Google Pixel 3 contains two sensors; an 8-megapixel wide-angle lens with f/2.2 aperture, fixed focus, and 97-degree field-of-view, and another 8-megapixel normal lens with f/1.8 aperture, PDAF, and a 75-degree field-of-view. The OnePlus 6 gets a single 16-megapixel front Sony IMX371 camera sensor with a 1-micron pixel size, f/2.0 aperture, and EIS. The selfie camera comes with Portrait Mode, Face Unlock, and Slow Motion video recording. The iPhone XS has a 7-megapixel RGB selfie camera with f/2.2 aperture. Lastly, the Samsung Galaxy Note 9 gets an 8-megapixel selfie camera with autofocus and f/1.7 aperture.
The Google Pixel 3 packs in a 2,915mAh battery with support for up to 18W fast charging and Qi wireless charging. The bundled charger claims to offer up to 7 hours of battery life within 15 minutes of charging. The Pixel Stand, priced at Rs. 6,900 in India, provides fast, wireless charging as well. OnePlus 6, on the other hand, sports a 3,300mAh battery under the hood, with support for the company's proprietary Dash Charge 20W fast charging technology that claims to deliver a day's power in half an hour. The iPhone XS has a 2,658mAh battery unit with support for fast charging. And, the Samsung Galaxy Note 9 features a 4,000mAh battery under the hood.
Connectivity options on the Google Pixel 3 include 4G VoLTE, Wi-Fi 802.11ac with 2x2 MIMO, Bluetooth v5.0 with LE, a USB Type-C (v3.1) port, GPS/ A-GPS, GLONASS, BeiDou, NFC, and Google Cast. The OnePlus 6 also gets 4G VoLTE, dual-band Wi-Fi 802.11ac with 2x2 MIMO, Bluetooth 5.0 with aptX, GPS/ A-GPS, NFC, a USB Type-C, port, and a 3.5mm headphone jack. The iPhone X features 4G VoLTE, dual-band Wi-Fi, Bluetooth, GPS/ A-GPS, NFC, and a Lightning port. And, finally, Samsung's Galaxy Note 9 comes with 4G VoLTE, dual-band Wi-Fi 802.11ac, Bluetooth v5.0, a USB Type-C port, and a 3.5mm headphone jack. The Google Pixel 3, OnePlus 6, and Samsung Galaxy Note 9 sport rear-mounted fingerprint sensors.
Dimensions of the Google Pixel 3 are 145.6x68.2x7.9mm and weight is 148 grams. OnePlus 6 measures 155.7x75.4x7.75mm and weighs in at 177 grams. The iPhone XS measures 143.6x70.9x7.7mm and weighs about 177 grams. And, the Samsung Galaxy Note 9's dimensions are 161.9x76.4x8.8mm and weight is 201 grams.