There is one limitation if you go with the wifi only model of an idevice - from reading, the wifi one does not contain on-board gps. Now it is not entirely necessary but the gps on phone/tab allows you to change your home point - so it you move your position while flying - bike, car jogging, skiing, you will not be able to change the home point easily - there can be workarounds.
Hi ff22, Thank you for your follow-up. I believe I should have GPS functionality for the reasons you stated. Would that also require me to pay for a cellular data plan?stated
Problem solved, thank you DJI !!!Be aware of this problems I encountered with my CrystalSky
1. No EV (shutter speed) with the 5D button possible, still no answer
See: Mavic2 pro + Crystalsky 5.5 problem
2. Not possibility for the new extended waypoints function (no new firmware)
But possible to install the Litchi (installed it but didn't try it out).