"Oppo is growing fast and rising up the ranks", Mawston said. China's rising brand, Oppo R9s was in third place with almost nine-million sold, followed by Samsung's Galaxy J3 with a bit over six-million.
A new look at the global shipment of mobile phones, released by Strategy Analytics, has shown that Oppo has bested Samsung in the first quarter this year shipping more of their flagship handset, the R9S than any of Samsungs current offerings.
Mawston pointed out that Oppo's previous flagship 4G model, the R9, was the world's sixth best-selling smartphone in the second quarter of a year ago.
Though the iPhone 5s is a 2013 model, it is a sensational device in India with 20 percent of total Apple's iPhone sales in India. The phone launched back in October 2016 and comes with a 5.5-inch display with 1920 x 1080 resolution and a Snapdragon 625 processor under the hood.
The top-five models accounted for one in six of all smartphones shipped worldwide in the January to March period, according to Strategy Analytics.
Samsung Galaxy J3 captured 2 per cent global smartphone market-share and fourth place, while Galaxy J5 took 1 per cent global share to become the world's fifth most popular model.
That new device is expected to kickstart a "supercycle" of iPhone sales, as consumers upgrade their old phones in light of the first major design overhaul since the 6 in 2014.
"Huawei and Xiaomi have occasionally snuck a model into the top ten globally from 2014 to 2016, but have not been able to sustain their momentum", he said.
Huawei has used Europe as a primary location to showcase its new flagship models and promote its brand image for several years, and has seen its smartphone sales in Europe and the United States continue to grow. At the same time, China-based brands Oppo and Vivo (both of which are owned by BBK Electronics), along with Huawei have seen substantial increases in shipments of their smartphones in the country.