I have the same prob. I bought a 3 watt signal booster from JDTeck. It works great. My signal went from one bar at best to Full. I can make and receive crystal clear calls, granted I'm not as moblie now because I have a wire hooked up to the external antenna of my phone, but at least I can make and receive calls. If its a option for you I can give more info on the matter. Or you could just buy a external antenna adapter, but again you would be strapped to a cord..