TAIPEI—Apple supplier Foxconn forecast on Friday that a global chip shortage would run into the second half of 2022 and its fourth-quarter revenue for electronics, including smartphones, would fall more than 15 percent. Chairman Liu Young-way said during a conference call that Foxconn was cautious about its 2022 revenue outlook, citing uncertainties surrounding the coronavirus pandemic, inflation, geopolitical tensions, and supply chains. Earlier Foxconn, the world’s largest contract electronics maker, reported a 20 percent jump in third-quarter profit. “If not for supply shortages prospects for the fourth quarter could have been better,” he said, adding that supply of power management chips remained tight and a global chip crunch could last longer than his previous forecast of second quarter. “Regarding next year’s prospects, we will be relatively cautious in our outlook,” Liu added. A year-long shortage of chips, initially due to sky-rocketing demand for smartphones and personal gadgets during the pandemic, …