Samsung Galaxy A42 5G mobile was launched on 2nd September 2020. The phone comes with a 6.60-inch touchscreen display. Samsung Galaxy A42 5G is powered by a 1.7GHz octa-core processor that features 2 cores clocked at 2.2GHz and 6 cores clocked at 1.8GHz. It comes with 4GB of RAM. The Samsung Galaxy A42 5G runs Android 10 and is powered by a 5000mAh battery. The Samsung Galaxy A42 5G supports proprietary fast charging.

As far as the cameras are concerned, the Samsung Galaxy A42 5G on the rear packs a 48-megapixel (f/1.8) primary camera; an 8-megapixel (f/2.2) camera; a 5-megapixel (f/2.4) camera, and a 5-megapixel (f/2.4) camera. The rear camera setup has autofocus. It sports a 20-megapixel camera on the front for selfies with an f/2.2 aperture.

The Samsung Galaxy A42 5G runs One UI is based on Android 10 and packs 128GB of inbuilt storage that can be expanded via microSD card (up to 1000GB). The Samsung Galaxy A42 5G is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Samsung Galaxy A42 5G measures 164.40 x 75.90 x 8.60mm (height x width x thickness) and weighs 190.00 grams. It was launched in Prism Dot Black, Prism Dot Gray, and Prism Dot White colours.

Connectivity options on the Samsung Galaxy A42 5G include Wi-Fi, GPS, Bluetooth v5.00, 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.