Is Unity iPhone picture in a game possible?

Hello. Is Unity iPhone picture in a game possible? Is there a way I can insert a JPEG picture from my iPhone to the Unity 3D 4.1 powered Dead Trigger 2 game? I have a 32 GB iPhone 4 with 1 GHz Cortex-A8 CPU, PowerVR SGX535 GPU and iOS 6.1. Thanks in advance.
