Magnetic tank GPS/Cell phone holders?

[Cormanus]

dBuster, have you considered getting a handlebar mount? I am one of the villains (see thread on pop-up ads) with a phone from the evil empire that I also use as a GPS on the bike. I have it in a Lifeproof case. Lifeproof also sells an inexpensive handlebar mount the case clicks into. I've a power outlet clamped onto the bars and can charge the phone on the go.

I've seen other options talked about on the forum.

Edit: The beauty of the Lifeproof holder is that clips on and off the bars really easily with a spring clip. Not so the power outlet the clamp for which has to be screwed on.