California-based law firm Kershaw, Cuttiner, and Ratinoff is asking for customers with iPhone 4 signal reception issues to contract them, likely signaling the beginnings of a class-action suit against Apple over the issues. An announcement was posted to their site this week.

The reception problem looks like it won’t be going anytime soon. While some have tried to argue that the problems are related to iOS4 itself, it seems highly unlikely it’s a software issue alone. With Apple confirming that the metal band around the phone does serve as an antenna, it seems as if any interference to that (including putting your hand over it) would degrade signal quality.