Lava Z66 mobile comes with a 6.08-inch touchscreen display with a resolution of 720×1560 pixels at a pixel density of 283 pixels per inch (ppi) and an aspect ratio of 19:9. Lava Z66 is powered by a 1.6GHz octa-core processor. It comes with 3GB of RAM. The Lava Z66 runs Android 10 and is powered by a 3950mAh battery. As far as the cameras are concerned, the Lava Z66 on the rear packs a 13-megapixel primary camera with an f/2.0 aperture, and a 5-megapixel camera. It sports a 13-megapixel camera on the front for selfies.