As of May 2014, eight of the world's ten best-selling smartphones are made by either Apple or Samsung, according to Counterpoint. The iPhone 5s claimed first place ahead of the Samsung S5 and S4.
This means that the iPhone 5s, released in September 2013, is successfully withstanding competition from the Samsung S5, launched worldwide in April 2014.
Within the top 10, the only two devices not made by Apple or Samsung are from Chinese manufacturer Xiaomi, which is beginning to export its products around the world.
Meanwhile, Sony, Motorola, Huawei, LG and Nokia are entirely absent from the list.
Top 10 best-selling smartphones worldwide in May 2014:
1. Apple iPhone 5s
2. Samsung Galaxy S5
3. Samsung Galaxy S4
4. Samsung Note 3
5. Apple iPhone 5c
6. Apple iPhone 4S
7. Xiaomi MI3
8. Samsung Galaxy S4 mini
9. Xiaomi Hongmi Redrice
10. Samsung Galaxy Grand 2
The ranking is based on smartphone sales from 35 countries.