Oppo A78 mobile was launched on 12th August 2023. The phone comes with a 90 Hz refresh rate 6.43-inch touchscreen display offering a resolution of 1080x2400 pixels (FHD) at a pixel density of 409 pixels per inch (ppi). Oppo A78 is powered by an octa-core Qualcomm Snapdragon 680 processor. It comes with 8GB of RAM. The Oppo A78 runs Android and is powered by a 5000mAh non-removable battery. The Oppo A78 supports Super VOOC fast charging.

As far as the cameras are concerned, the Oppo A78 on the rear packs a dual camera setup featuring a 50-megapixel (f/f/1.8) primary camera, and a 2-megapixel (f/2.4) camera. It has a single front camera setup for selfies, featuring an 8-megapixel sensor with an f/2.0 aperture.

The Oppo A78 runs ColorOS 13.1 is based on Android and packs 128MB of inbuilt storage that can be expanded via microSD card. The Oppo A78 is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Oppo A78 measures 160.00 x 73.20 x 7.90mm (height x width x thickness) and weighs 180.00 grams. It was launched in Aqua Green and Mist Black colours.

Connectivity options on the Oppo A78 include Wi-Fi 802.11 a/b/g/n, GPS, Bluetooth v5.00, NFC, USB OTG, USB Type-C, 3G, and 4G (with support for Band 40 used by some LTE networks in India) with active 4G on both SIM cards.