You can keep an eye on it. I’m not sure when there’s a lot of people. I feel that after get off work, many people will look at their phones when they take transportation.
You can pay attention to observe, when the specific number of people I am not sure, I feel after work a lot of people will take transportation will look at mobile phones.
You can watch carefully. I'm not sure when there are too many people. I feel that many people will look at their mobile phones by means of transportation after work<br>