TCL 20L+ mobile was launched on 14th April 2021. The phone comes with a 6.67-inch touchscreen display offering a resolution of 1080×2400 pixels at a pixel density of 395 pixels per inch (ppi) and an aspect ratio of 20:9. TCL 20L+ is powered by an octa-core Qualcomm Snapdragon 662 processor. It comes with 6GB of RAM. The TCL 20L+ runs Android 11 and is powered by a 5000mAh battery. The TCL 20L+ supports proprietary fast charging.

As far as the cameras are concerned, the TCL 20L+ on the rear packs a quad camera setup featuring a 64-megapixel (f/1.79) primary camera; an 8-megapixel (f/2.2) camera; a 2-megapixel (f/2.4) camera, and a 2-megapixel (f/2.4) camera. The rear camera setup has autofocus. It has a single front camera setup for selfies, featuring a 16-megapixel sensor with an f/2.2 aperture.

The TCL 20L+ runs TCL UI is based on Android 11 and packs 256GB of inbuilt storage that can be expanded via microSD card (up to 1000GB). The TCL 20L+ is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The TCL 20L+ measures 166.20 x 76.90 x 9.10mm (height x width x thickness) and weighs 199.00 grams. It was launched in Eclipse Black and Luna Blue colours.

Connectivity options on the TCL 20L+ include Wi-Fi, GPS, Bluetooth v5.00, NFC, USB Type-C, 3G, and 4G. Sensors on the phone include accelerometer, ambient light sensor, gyroscope, proximity sensor, and fingerprint sensor.