Redmi Note 9S smartphone was launched on 23rd March 2020. The phone comes with a 6.67-inch touchscreen display with a resolution of 1080x2400 pixels and an aspect ratio of 20:9.

Redmi Note 9S is powered by a 2.3GHz octa-core Qualcomm Snapdragon 720G processor. It comes with 4GB of RAM.

The Redmi Note 9S runs Android 10 and is powered by a 5020mAh battery. The Redmi Note 9S supports proprietary fast charging.

As far as the cameras are concerned, the Redmi Note 9S on the rear packs a 48-megapixel primary camera with an f/1.79 aperture; a second 8-megapixel camera; a third 5-megapixel camera and a fourth 2-megapixel camera. The rear camera setup has phase detection autofocus. It sports a 16-megapixel camera on the front for selfies.

The Redmi Note 9S runs MIUI 11 based on Android 10 and packs 64GB of inbuilt storage that can be expanded via microSD card (up to 512GB) with a dedicated slot. The Redmi Note 9S is a dual-SIM (GSM and GSM) smartphone that accepts Nano-SIM and Nano-SIM cards.

Connectivity options on the Redmi Note 9S include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v5.00, USB Type-C, Wi-Fi Direct, 3G, and 4G (with support for Band 40 used by some LTE networks in India) with active 4G on both SIM cards. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor. The Redmi Note 9S supports face unlock.

The Redmi Note 9S measures 165.70 x 76.60 x 8.80mm (height x width x thickness) and weighs 209.00 grams. It was launched in Aurora Blue, Glacier White, and Interstellar Grey colours.