For the month of June, Apple is giving a small boost to its trade-in price values for the iPhone 4S, iPhone 5, and iPhone 5S, according to Apple Store sources. Using the Reuse and Recycle program, a customer can bring in an older iPhone model and receive gift card credit toward the purchase of a newer iPhone. Likely in order to spur some new iPhone sales this month, Apple is offering the following improvements to its trade-in pricing:

– iPhone 4S: $50 of credit instead of $35

– iPhone 5: $100 of credit instead of $85

– iPhone 5S: $200 of credit instead of $175

Unsurprisingly, the still-on-sale iPhone 5S gets the biggest value boost this month as Apple can likely re-use and recycle some of the parts for refurbished units. This month’s change is only available in the United States. For those with non-iPhones, Apple recently debuted a version of the program for you.

Image via Reuters.