I have been looking for a short wrist strap for my Charge phone mainly because it is so easy for this phone to slip out of your grasp when holding it to take photos.
I finally figured out what to do. As you may already know there is a strap attachment point just above the up/down volume control on the left side of the phone. Then if you remove the phones back you can slip into that hole a loop like is on most all straps that are for sale. Replace the camera back onto your camera and you're done. It's so easy even I can do it!
The discussion that tipped me off was on the xda-developers site.
http://forum.xda-developers.com/archive/index.php/t-1058757.html
Go for it if you want a wrist or neck strap.
JerryF