Starbucks plans to reopen 85 percent of its locations under modified operations and hours across the US by the end of the week, the coffee giant announced. The company’s mobile app — already used by about 20 million customers — will be optimized for voice ordering through Siri, curbside pickup, entryway handoff, and improved drive-thru experiences, according to a letter CEO and president Kevin Johnson wrote to customers Monday. “We are putting immense emphasis on the safest and most convenient way for customers to order their favorites from Starbucks,” Johnson said. The company will “shift toward more cashless experiences, knowing that the handling of cash creates consumer concerns about the spread of viruses,” according to Johnson. “We predict the mobile app will become the dominant form of payment,” he said. A Starbucks spokesman said the company does not yet have specific details about openings in the Big Apple. Even before the pandemic, more than 80 percent of orders at U.S. Starbucks were placed “on the go” through a drive-through or mobile app, according to Johnson. The Seattle-based chain temporarily shuttered about 8,000 of its company-owned stores across the country in late March — and is one of the first national chains to share its reopening plans, The Washington Post reported. By early June, more than 90 percent of Starbucks locations are expected to be back in business, Johnson said.