Cellular faux refers to a social phenomenon wherein which a person acts as though he is on his cell phone in order to shield himself from uncomfortable situations.
手机掩护法(cellular faux)指有人为了避免使自己陷入尴尬境地而假装在打电话的情形。
For example:
When Peggy saw the beggar approaching, she flipped open her LG and began laughing incessantly as though someone had told a joke on the other end of the line. Still penniless, the beggar's plan was thwarted by cellular faux.