Is a usb phone better than WiFi phone?

Answer 1

That would fully depend on what you intend on doing with it?

Both connectivity options can easily support the "bandwidth" requirements, so it fully depends on whether you want to be tied down to a computer.

The only problem two problems with wifi I can foresee are

1) battery life - wireless will drain the battery, were as usb should in theory be charging all the time through the +5 volt line.

2) coverage - depending whether there is a strong wifi link would depend on the coverage you'd receive.

so to answer the a usb phone better than wifi phone is mainly down to a portability question.

usb isn't portable, wifi is.