These are phones priced below Rs 5000, in which WhatsApp, YouTube, Facebook will all work

Lava Z41: Its price is Rs 4,049. This phone.Works on Android OS, v8.1. It has 5 MP primary camera, 1 GB RAM, 2 MP front camera, quad core processor, 16 GB storage and 5 inch screen. It gets 2500 mAh battery.