A:AnswerThis is the 5th generation (current generation) of iPad mini. You will most likely have to buy a new case. The case from my old iPad mini (3rd generation) was about a millimeter off.
A:AnsweriPad mini comes with a variety of pre-installed apps including Messages, FaceTime, Safari, Mail, Calendar, Photos, and more. The App Store has even more apps, designed to take advantage of the power and large display of iPad mini.
A:AnswerAs long as it attaches via the headphone jack. I have a PayPal reader and a Square reader that both work using the headphone jack but admittedly it's been months since I've used them.