This Antenna-aid sticker is a quick and cheap way to fix the iPhone 4 “death grip”. Just stick it to the lower left of the iPhone antenna and you will get your signal performance improved. It is available $0.99 for two pieces and there are many colors for you to choose from.
“Antenn-aid is a custom-sized sticker for your iPhone 4. When placed over the lower left corner of the antenna it may improve signal performance. Results may vary.”
More picture after the jump.