Notably, both the smartphones run Funtouch OS that is based on Android Jelly Bean. It comes with 16GB of internal storage and houses a 13MP rear cameras with f/1.8 aperture. It includes connectivity options 3G, Wi-Fi, Bluetooth, and micro-USB.
The Vivo Xshot sports a big 5.2-inch full-HD display, and is powered by a 2.26GHz quad-core Snapdragon 801 processor, that is further coupled with 2GB of RAM. Apart from the 4G LTE connectivity, it houses an 8MP front camera, 2,600mAh battery, and supports external microSD card up to 128GB.
The Vivo X3S offers a 5-inch HD IPS screen, and is powered by a 1.7GHz octa-core processor, alongside 1GB of RAM. It packs a 2,000mAh battery. At 5.95mm thin body, it includes a 5MP front camera.
Reference | Reference 2