Apple's iPhone revenue accounted for 44 percent of the total global smartphone revenue in 2021, leading the world in smartphone brands, according to research by Counterpoint, a market research provider. It was followed by Samsung and Oppo.

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The global smartphone market revenue crossed $448 billion last year, a growth of 7 percent year-on-year, while component shortages and COVID-19 restrictions continued to disrupt supply chains around the world.

Apple's iPhone revenue increased 35 percent year-on-year to $196 billion in 2021. Meanwhile, Samsung's smartphone revenue increased 11 percent yearly to reach $72 billion, and Oppo increased 47 percent from a year ago, to $37 billion.

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Let's look at the full list of the top 5 brands by market revenue in 2021.

No 5 Vivo

This photo shows a Vivo advertisement in Shanghai on Dec 28, 2021. (PHOTO / IC)

No 4 Xiaomi

A foldable smartphone from Xiaomi is showcased on Jan 25, 2022. (PHOTO / IC)

No 3 Oppo

People walk past an Oppo advertisement in Shanghai. (PHOTO BY CHEN YUYU / FOR CHINA DAILY)

No 2 Samsung

A Samsung Galaxy S21 mobile phone is displayed at a store in Rizhao, Shandong province, on Jan 18, 2021. (PHOTO / IC)

No 1 Apple

This handout image obtained Sept 14, 2021, courtesy of Apple Inc., shows Apple CEO Tim Cook unveiling the new iPhone 13, which comes in five colors including pink, during a special event at Apple Park. (BROOKS KRAFT / APPLE INC. / AFP)