Apple releases third-quarter earnings Tuesday and analysts will be looking for a big bump in iPhone sales. They’ll also be looking for hints about how the Apple Watch is doing.

Last year during the third quarter, Apple sold 35 million iPhones. This year, analysts predict somewhere in the neighborhood of 50 million.

If they’re right, “This could be the first sign that the flagship Android phones are effectively done,” says Andrew Uerkwitz of Oppenheimer, pointing out that phones that cost as much as the iPhone, like Samsung’s Galaxy 6, don’t sell nearly as well.

Apple has said it won’t break out quarterly sales numbers for the Apple Watch, so analysts will be looking to other revenue categories, such as “other,” for clues.