The Galaxy S20 Plus, which was launched in February, took a revenue share of 9 percent in the global 5G smartphone market in the first half of the year, according to market researcher Strategy Analytics.
The revenue of the global 5G smartphone industry reached $34 billion in the first six months of 2020.
"The S20 Plus 5G is among the world's first blockbuster 5G models and is popular across Western Europe, South Korea, North America and elsewhere," Strategy Analytics said.
"Samsung is making big money from 5G phones."
The smartphone was followed by Samsung's other two Galaxy S20 5G models, with the high-end S20 Ultra sitting second with a 8 percent revenue share and the entry-level S20 ranking third with a 5 percent revenue share, the data showed.
The Galaxy S20 devices were followed by 5G smartphones from China's Huawei Technologies Co., with its P40 Pro and Mate 30 coming in fourth and fifth, respectively.
Strategy Analytics predicted that Asian brands' presence in the 5G smartphone market could decline in the second half of the year as Apple has now launched its first 5G-supporting smartphone family, reports Yonhap news agency.
Earlier this month, Apple unveiled four models of the iPhone 12 series -- the 5.4-inch iPhone 12 Mini, the 6.1-inch iPhone 12, the 6.1-inch iPhone 12 Pro and the 6.7-inch iPhone 12 Pro Max.
"Looking ahead, we expect Apple iPhone 12 to overtake both Huawei and Samsung during the second half of 2020," it said.
"The iPhone 12 5G portfolio will deliver tens of billions of dollars of revenue in just a few weeks during the run-up to the X-mas holiday season and beyond. Apple iPhone 12 will soon take the 5G crown."