Velcro should do the job. And a Velcro patch on the guitar somewhere, or the side of my jeans, or maybe a forearm.

Anyone else finding it sometimes really tricky to balance the iPhone somewhere sensible when reading off it?

I'll write an app for that

Yeah, it's tricky. But why put it here...?
Quote by silhouettica
Oh, DON'T use a knife. It cuts through your strings. I did that once, thinking, its the Low E, its invincible. Turns out, its not...

Quote by Kensai