Donate.IT is an iOS app for donating and receiving tech equipment.  You can create a listing for any phone, laptop, or tablet you'd like to donate to someone in need.  You can also make a request for an item listed for donation and the app will send an email to the donor with your contact email. The donor and the recipient coordinate the exchange and when both parties have marked the item as successfully donated/received the donor will receive a tax receipt via email.

Check out Donte.IT on GitHub