I was watching a series of video about English teaching, I heard a word like lose your phone, I am not sure that whether the word is right or not, thanks everyone for helping me. Does anyone say to others like hanging up your phone, could say lose your phone, they are the same expression?
There are two ways "lose" might have been used in your case.
Question: Did you lose your phone?
Telling someone to throw away their phone. Lose your phone. May be it was bugged by the FBI.
In the second case, "lose" means to "cease to have or retain (something)". Lose the murder weapon before your car is searched. This means throw it away.
You could also tell someone "Lose him" when you are in a car with "someone" and "him" is chasing you in in their car. This would mean "evade or shake off (a pursuer)".