I have purchased Vivo Y31 about 1 month ago. It’s 6GB RAM and 128GB big internal storage is an impressive duo. There are triple cameras setup of a 48MP main accompanied by a 2MP deapth camera and other 2MP micro camera on its rear side. The rear camera setup provide multiple features like autofocus, HDR mode, touch to focus, auto focus, continuous shooting and more. 16MP selfie camera on the front side of device is very impressive. Qualcomm Snapdragon 662 processor is working well. Battery backup is also very good with 5000mAh powerful battery and 18W fast charging technology. So, magnificent battery and impressive cameras make it awesome phone. Overall , Vivo Y31 2021 is a power performer available within a considerable budget making it a good investment.