Vivo Y15s is a 6.51-inch touchscreen display with a resolution of 720×1600 pixels. The smartphone is powered by an octa-core MediaTek Helio P35 (MT6765) processor. It comes with 3GB of RAM. The Vivo Y15s runs Android 11 and is powered by a 5000mAh battery.

As far as the cameras are concerned, the Vivo Y15s (on the rear packs a dual camera setup featuring a 13-megapixel primary camera with an f/2.2 aperture, and a 2-megapixel camera with an f/2.4 aperture. The rear camera setup has autofocus. It has a single front camera setup for selfies, featuring an 8-megapixel sensor with an f/2.0 aperture.

The Vivo Y15s runs Funtouch OS 11.1 is based on Android 11 and packs 32GB of inbuilt storage that can be expanded via microSD card. The Vivo Y15s is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards.

Connectivity options on the Vivo Y15s include Wi-Fi, GPS, Bluetooth v5.0, USB OTG, Micro-USB, 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, proximity sensor, and fingerprint sensor.  With active 4G you are good to go.