OnePlus 9 smartphone was launched on 23rd March 2021. The phone comes with a 6.55-inch touchscreen display with a resolution of 1080x2400 pixels at a pixel density of 402 pixels per inch (ppi) and an aspect ratio of 20:9. OnePlus 9 is powered by an octa-core Qualcomm Snapdragon 888 processor. It comes with 8GB of RAM. The OnePlus 9 runs Android 11 and is powered by a 4500mAh battery. The OnePlus 9 supports proprietary fast charging.

As far as the cameras are concerned, the OnePlus 9 on the rear packs a 48-megapixel primary camera with an f/1.8 aperture and a pixel size of 1.12-micron; a 50-megapixel camera with an f/2.2 aperture, and a 2-megapixel camera. The rear camera setup has autofocus. It sports a 16-megapixel camera on the front for selfies with an f/2.4 aperture and a pixel size of 1.0-micron.

The OnePlus 9 runs OxygenOS 11 is based on Android 11 and packs 128GB of inbuilt storage. The OnePlus 9 is a dual-SIM (GSM and GSM) smartphone that accepts Nano-SIM and Nano-SIM cards. The OnePlus 9 measures 160.00 x 73.90 x 8.10mm (height x width x thickness) and weighs 183.00 grams. It was launched in Arctic Sky, Winter Mist, and Stellar Black colours.

Connectivity options on the OnePlus 9 include Wi-Fi 802.11 a/b/g/n/ac/Yes, GPS, Bluetooth v5.20, NFC, USB Type-C, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and in-display fingerprint sensor.