I agree with Schiller&#x27;s functional breakdown. Based on my own experience: if I can, I just use my Note 4 phone. If that is insufficient I grab my iPad. If that is insufficient, I grab a laptop.<p>The older I get, and the more writing I do rather than software development, the more I gravitate to smaller devices. It amazes me how easy it is to edit and write manuscripts on small devices. Same as for doing research by web browsing, taking notes, etc.<p>For some people, they can skip device size levels. For example, some people might only need a phone, a phone + laptop, or perhaps just a tablet with 4g.<p>I think Apple is making the right decision spreading their product lines to more device types and sizes inside types.