Is there anything that can be done to improve the signal strength and prevent calls from being dropped? I work from home and need my cell phone for business calls. Ever since I bought the Galaxy S3 I have dropped calls all day long. Whether I take call inside or go outside to talk I lose the signal several times a day. Please I can't seem to get any support what so ever and I read that so many others have this same problem but I see no response that provides any help.