This Xiaomi, Oppo, Vivo handsets are mostly owned by young crowd, while people who are less technical or of age groups above 40/50 tend to go with Samsung brand. I have seen many people using Samsung smartphones which are never advertised (like On brand or Grand) while travelling by bus. Even many cab drivers, delivery boys have Samsung phones even if those are 3-4 year old. All these people were at one time Nokia users, who shifted to Samsung. Once low cost Nokias are available, and available easily offline, many of these user would turn from Samsung to Nokia. And don't forget China factor associated with Chinese brand. Now I know every electronic device is actually build in China.