Multiple men fill the scene, one in a white button up shirt using his cellphone, the others wearing pink, orange, and green shirts engaged in various activities in the background.
Three of the men are talking on their phones.
Multiple men does not imply that there are exactly three men.  One man using his cellphone does not imply that three men are talking on their phones.
Just because one man is using his cell phone doesn't mean three are talking on their phones.
Not all three of the men are talking on their phones.