If you are the proud owner of a brand new iPhone 4 you could be one of many people who have discovered that if you hold it in your palm, [as you would of course,] the slight electrical charge of your skin creates a connection between the two antennae that wrap around the device, causing dropped connections.
So here's the fix via Fast Company.
These environmentally friendly cases are made in Portland, Oregon by Grove. Here's what they have to say:
Our products are 100% designed and made by us in Portland, Oregon USA. We utilize sustainable materials, natural finishes, and responsible packaging. We take pride in our process which is good for us and the planet. *FSC certified bamboo is used when available.*