https://www.gadgetsnow.com/mobile-phones/Vivo-S1
The Vivo S1 mobile features a 6.38" (16.21 cm) display with a screen resolution of 1080 x 2340 pixels and runs on Android v9.0 (Pie) operating system. The device is powered by Octa core (2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55) processor paired with 4 GB of RAM. As far as the battery is concerned it has 4500 mAh.