Apple delivered revenue growth of 17% on a year earlier despite a rise of just 1% in the number of iPhones shipped That was in part due to a 19% surge in the average sales value per handset. The slowdown in handset sales appears to be an industry-wide phenomenon – U.S. imports of handsets fell 17% on a year earlier in the three months to May 31. With 82% of phones coming from China there may be concerns about the widening tariff spat between China and the U.S. CEO Tim Cook indicated though that tariffs are “a tax on the consumer” suggesting that price increases would cover higher duties....