The long-awaited iPhone trade-in program is officially under way. Motley Fool analyst Joe Tenebruso believes that this program will have multiple benefits for Apple (AAPL 0.51%), including an accelerated iPhone upgrade cycle, increased traffic at Apple's retail stores, and further evidence as to the durability and lasting value of Apple's products.

In addition, senior technology analyst Eric Bleeker offers his take on the potential impact of the trade-in program on Apple's emerging-market sales.

Ultimately, both analysts agree that this new program will have a very positive impact on Apple's iPhone sales, and that it's another important catalyst that could drive the tech giant's shares higher in the months ahead.