I not like vivo v1. I am used vivo v1 but not good .its getting to slow process. Past 2 year am using vivo v1 mobile now recently I have a issue in network problem am using jio sim and airtel sim but network big problem. Its getting too slow and over heating occurs while charging.otg not supported in vivo v1.that camara is not good performance.its very bad performance camara result. And not supported marshallows system in vivo v1 mobile. That is very slow process.vivo v1 headset is very bad performance is sound. Vivo v1 speker is sorttime performance. Its very slow sound. Vivo v1 display is very small. It brightness is very low performance. It s not good vivo v1 .