Apple for the first time is accepting banged up iPhones as a trade-in from those wanting to upgrade.

Until now, Apple offered credit to iPhone owners only if the device had an intact screen and working buttons. Apple hopes that with more leeway, applicable only to iPhone 5 and later models, more people will upgrade to new iPhones.

Apple has told investors that it may book its first revenue decline in 13 years when it reports quarterly earnings in April due in part to weakness in the global economy. But the smartphone market has matured as well after a years-long streak of blistering hot demand.

Apple relies on the iPhone for two-thirds of its revenue.

Tech blogs have speculated about an iPhone 7 to be released in the fall with dual cameras and wireless earbuds.

Apple expanded its Reuse and Recyling program to Canada in March 2014. 

The company's Canadian iphone trade-in program will pay $50 for a damaged iPhone 5s, $200 for a damaged iPhone 6, and $250 for a damaged iPhone 6s. It will pay up to $500 for an undamaged iPhone 6 Plus.

In the U.S., Apple pays up to $350 US for phones without cracked screens or broken buttons. For damaged phones, it will pay $50 US for a 5s, $200 US for a 6 and $250 US for a 6 Plus.

The changes, first reported on the tech blog 9to5Mac as well as in-store installation of screen protectors, were confirmed Friday by Apple spokesman Nick Leahy.

With files from CBC News