The term IPHONE BUYS can be summarized by the crossword solution 'APPS', which stands for applications. An iPhone is a type of smartphone developed and marketed by Apple Inc. that runs on the iOS operating system. It is capable of downloading and purchasing applications, or 'apps', from the App Store, which is an online digital distribution platform for mobile apps. Therefore, the term IPHONE BUYS can be summarized as referring to the purchase of apps for an iPhone.