vm7 It often happens that it helps to achieve a more stable signal reception, because there will be either a working LTE or nothing at all, but there will not be a jump to useless (overloaded) in some places 3g, when the signal seems to be (and even full), in fact, there is no connection. In the regions on business trips, I so often do, especially in those cities where LTE is “fresh”, and 3g is utterly overloaded.