A:AnswerYes, if you already have a phone and the phone and ipad are on the same wifi you can connect it to your phone and make receive calls. I really like this feature.
-there is also the option of getting a voice over internet protocol or voip number, if you don't already have a phone.
Or if you have a cellular model, a voip service would let you call from any where you have cell service on your ipad.
A:AnswerYes. You can definitely use your phone as a hotspot and run your ipad off your phone hotspot instead of buying the more expensive ipad with the cellular capability. This is a much more cost effective way to run your ipad. I used to have a cellular ipad and this works equally as well without the monthly payment. One caution is to check your cellular plan to see how much hotspot data they allot you before they start charging you.