In this Sept. 19, 2014 file photo, Mark Kellman uses his new iPhone 6 to take a photo at an Apple Store in Palo Alto, Calif. Analysts expect the California tech giants quarterly financial report Tuesday, July 21, 2015, will show another powerhouse performance. Apples signature iPhones remain popular, even as other smartphone makers are seeing demand slow down.
In this Sept. 19, 2014 file photo, Mark Kellman uses his new iPhone 6 to take a photo at an Apple Store in Palo Alto, Calif. Analysts expect the California tech giants quarterly financial report Tuesday, July 21, 2015, will show another powerhouse performance. Apples signature iPhones remain popular, even as other smartphone makers are seeing demand slow down. Tony Avelar AP
In this Sept. 19, 2014 file photo, Mark Kellman uses his new iPhone 6 to take a photo at an Apple Store in Palo Alto, Calif. Analysts expect the California tech giants quarterly financial report Tuesday, July 21, 2015, will show another powerhouse performance. Apples signature iPhones remain popular, even as other smartphone makers are seeing demand slow down. Tony Avelar AP

3 numbers to watch when Apple releases earnings Tuesday

July 21, 2015 11:13 AM