i want to hear my guitar live out of iPhone speakers.

Hello there, and thank you for any answers. I have an electric guitar hooked up to my iPhone. When I play, it is silent. When I listen to the track it is silent unti i unplug the guitar, then it switches to speaker output. It seems that iphone recognizes the input as "headphones". Is there a way to have the internal speakers be the audio output at the same time the 3.5mm is the input so that the guitar sound comes out of them In real time? thabk you.