If you've got an iPhone 4s, iPhone 5, or iPhone 5s, it just got a little more valuable. Apple has raised the trade-in values for these three devices through their Reuse and Recycle program. Run in partnership with Brightstar, the program allows customers to trade in their old devices in exchange for an Apple gift card.

Customers trading in an iPhone 4s can now receive a gift card for up to $50, up from $35, and iPhone 5 owners who send in their device can get $100, formerly $85. The iPhone 5s is now worth $200 from the program, up from $175. Of course, to qualify for trade-in, your device needs to be in working order.

Customers will receive their gift card once their device has been inspected.

Source: Apple, via: 9to5Mac