First off let me say Hands Free Mode is turned off. On two occasions now I driven home from work and see I've missed a call. The log shows it was only within the last 10 minutes and it takes 25 minutes to get home. Now I know the phone will ring. Played phone tag yesterday with my boss. No one I work with has an S4 so I don't know if this is a big issue but my wife has one and she seems to be having the same issue. I'd love any suggestions as to what might be going on.