So this is weird. I just did a 3g speed test with my iphone 4, both in a bumper and without. Both times the phone was laying flat in the same postion on a table and my hands were nowhere near it. Nothing changed other than the bumper. I got faster speeds with the bumper on than off. And I double checked this three times all with pretty much close to the same results. What's the deal? BUMPER OFF: BUMPER ON: this is not a hoax. i will video if necessary.