I had 2 OG droids and a bionic that don't work on my home wifi or my parents home wifi. They did work fine at starbucks and a few other places. My rezound works fine those home wifi's. I think the Motorola devices don't work with certain routers but I can't be more specific than that. They were different Lynksis routers... I hope someone can solve this because my wife uses a bionic and we usually don't get 4G access at home.
Good luck