I have an exam today!!! at...How can I answer these question

Aren't smartphone useful for homework?
Is there any situation where you think a smartphone is acceptable?
Do you use a phone yourself if so which one and do you need it of all?
Is there any aspect of smart phone that you feel is beneficial?

These all require YOUR thoughts, not ours. So if you'll post what YOU THINK, someone here may be able to critique your thinking and/or help with additional ideas.