Huawei’s struggles amid U.S.-China trade tensions are driving it to seek opportunities in other smart devices, setting itself up against a raft of hardware makers at home and abroad. The Chinese tech giant recorded sluggish revenue growth in 2020 , climbing just 3.8% to 891.4 billion yuan ($136 billion), as its net profit grew 3.2% to 64.6 billion yuan. The results were in line with Huawei’s forecasts, the company said Wednesday at its annual report day in Shenzhen, a rare occasion to get a glimpse into the private entity’s financials. To put the numbers in comparison, Huawei’s revenues were up 19% and 19.5% in 2019 and 2018, respectively. The slowdown in 2020 was primarily due to a slump in Huawei’s overseas smartphone sales after U.S. export controls cut the firm off core chipsets and Google services critical to consumers. But the challenge has also sped up the firm’s pace to diversify and offset losses from its phone business. For the past two years, Huawei’s has been ratchet...