A report from market analyst company Counterpoint Research has stated that Apple's iPhone X was the best-selling smartphone in the world in 2018. Top 10 charts for both the world and China were shared online and while Apple has dominated the global market, it seems the domestic manufacturer Oppo is the top dog in its home market.
https://www.notebookcheck.net/Report-claims-the-Apple-iPhone-X-was-the-world-s-best-selling-smartphone-in-2018-with-Xiaomi-s-Redmi-5A-being-the-best-selling-Android-device.420018.0.html