It doesn't matter how many bars I have, 4g, 3g, let when I get a call it sounds like they are in bubbling water and can't hear me or I can't hear anyone voice muffled. This phone has lots of bells and whistles, but the MOST IMPORTANT THING IS TO BE ABLE TO MAKE AND RECEIVE CALLS!!! OTHER ISSUE IS I HAVERY TO TRY 2 TO 4 TIMES TO GET A CALL TO GO THROUGH!!! I am paying a lot of money for this Galaxy 7 edge and I expect to be able to do the main function of a phone talk on it!!! Wish I has checked this phone out first!! Will never buy Samsung products again!!! Want my iPhone back!!!