Xiaomi takes offense at smartphone estimates off by 2.5M units, Apple doesn't

Xiaomi took the unusual step of reporting its smartphone shipments for the March quarter, which it issued in response to phone shipment data it said was "inaccurate and unfair, and deviates from our actual performance in terms of shipment of smartphones." Apple neither reported iPhone units nor took issue with IDC's data, despite its shipments clearly being undercounted by a margin more than twice as large.