Apple forecast revenue for the quarter ending March 31st will fall to between 55 billion and 59 billion dollars from 61.6 billion in the same quarter of 2018. That would represent a year-on-year decline of between 4% and 11% For the quarter ending December 29, it reported a 5% fall in revenues fo 84.3 billion dollars. Revenue from iPhones declined 15% from the prior year, while total revenue from all other products and services grew 19%.
Apple also said that more than half of the 1.8 billion iPhones it has ever sold are still in use, accounting for the bulk of the total 1.4 billion Apple devices in active use, which also include Macs, iPads and Apple Watches. source: Apple statement