iPhone sun shade ?

[j3gq_imp]

I don't know if this is what you need/want, and it won't work well while parked ... but ...
If you funnel "a mostly laminar stream of air" from around the position of the head light onto the backside of your phone, your i-phone will shut down less often - guarantied !
Why would this work ? even on a warm day the air around you is less warm than the surface temp of your phone (think solar radiation), and the natural air-stream from the frond of the bike is often impeded (turbulent) because of cables, phone holder, shields etc. Finally this air stream (even at 80F carries away more heat than the solar radiation dumps into the device.
How to do that ? your choice of funnel material, from cardboard to metal, color white or silver, and a creative way to fix it to the handle bar.

If you try it (it isn't hard to do or expensive) please report back !