My check was to place two test smartphones – Honor View 20 and Galaxy A51 – in two Samsung and LG refrigerators, and then try to call them. If the call does not pass, then the cell is working, but if it passes, then no. Not really hoping for anything, I made a test call and realized that the refrigerators did not block or shield anything. I admit that some “ZIL” from the mid-50s can cope with this task, but the decisions of a new generation will not save you from wiretapping. Therefore, do not do stupid things and do not put your device at risk.