When I go my new phone, I tested the famous "death grip", and the signal dropped from 5 bars to 1 in no time (though I could never replicate a complete signal loss). So I got some invisible shield for the sides and problem solved. 2-3 days ago, I received my free case, peeled the side shields off and before putting on the new case, I thought to test for death grip again just for the hack of it... Guess what?! I could not make it drop ONE bar!!! I did the tests at home both times!!! I guess it must have been fixed in the two software updates and the several network resets it's gone through!