I'd be on the phone, 200 phone calls a day.

我一天接200个电话。

youdao

A young boy pretends to be on the phone at one of the local shops.

一个小男孩在当地的一个商店中假装打电话。

youdao

If you've got a hands-free headset, you could even pretend to be on the phone while working.

如果你有一个头戴式耳机，当你工作时可用来假装你在打电话。

youdao

There is nothing that it's like on the inside to be a cell phone.

手机的体内,是没有感觉的。

耶鲁公开课 - 死亡课程节选

Unidentified Man (Actor): You can be whoever you want to be on the phone, you know what I'm saying?

NPR: Former Ameriquest Workers Tell of Deception

My guess is they would be on the phone with one of those evil lawyers in a heart-beat wanting a little justice.

FORBES: Lawyers Outspend Obama On The Web, Study Finds

Parties should be on the phone weekly sharing demand forecasts and market pricing, discussing cash-flow issues, updating pricing, and providing continuous feedback and updates on current business conditions.

WSJ: United They'll Stand