"Apple had a strong start to the year thanks to its new product line up that saw strong momentum globally. If COVID-19 did not happen, the vendor would have likely seen its iPhone sales reached record level in the quarter. Supply chain disruptions and declining consumer spending put a halt to this positive trend in February," explains Annette Zimmermann, research vice president at Gartner. "Apple's ability to serve clients via its online stores and its production returning to near normal levels at the end of March helped recover some of the early positive momentum. Oppo's smartphone sales fell 19.1% in the first quarter of 2020. Oppo's offline distribution which is one of its strengths suffered as the work from home trend forced consumers and businesses to purchase products online. To grow its sales and market share, it is paramount that Oppo strengthens its online channel, Gartner says.