First of all, I'm really really jealous of those of you who said their signal jump from 1 or 2 bars to 5 bars. I live in a condo so I have to mount the antenna on the inside where I got around 3 bars in that area. Even with the  green steady lights on the booster with gain set at the max. The signal only jumps may be a bar up and down depending on my movement.  I really want it to work,  but at this price. I think it's going back. Once my contract is up I'm switching from AT&T to  Verizon. There's more Verizon towers than AT&T in my area anyway according to the towers locator app. Got 5 bars on my old Verizon flip phone when I fire it up to test it.