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Brief Explanations:

All of these devices (phone, tablet, laptop) can be used for video - calls. However, phones are highly portable and commonly used for quick and on - the - go video calls. Tablets offer a larger screen than phones for a better visual experience and are also portable. Laptops usually have more processing power, better audio - visual components in some cases, and a larger keyboard which can be beneficial for longer video - calls or when multitasking during the call. But in general usage scenarios, a phone is the most accessible and widely used device for making video calls.

Answer:

phone