We both have Samsung Galaxy S5 phones. We also have Kindle Fires and a Verizon Ellipsis tablet. If I understand (which is questionable), we should be okay with the S5 phones but the Kindles and Ellipsis won't work because they don't have GPS capabilities. I'm confused about the WiFi need or no need. I thought I'd read somewhere that the phone or tablet was connected to the controller and just served as a monitor. That the signal was being received by the controller and the image was sent to the monitor via the cable. It was not using WiFi to receive the image and did not increase data usage. From the "Recommended Devices" listed in specs on DJI's site, all of the iPads listed say Wifi + Cellular. I noticed in the DJI Phantom 3 Pro/Advanced, Quick Start Guide video on Youtube, the 4G and all bars were showing on the tablet. I hate to pay another whatever/month for a data plan from Verizon but I can see where a larger screen would be a great benefit so am interested in a tablet. If I could find one of the compatible tablets used, would I need to have Wifi on it too? If I purchased a tablet, would the smallest (and least expensive) 16gig work well enough? Isn't the actual video stored on the card in the camera? I have a 64gig card for the camera. I'm resisting adding another gizmo to spend money for and cart around! Sort of off this subject but I have Cyberlink PowerDirector that I use to edit video from my camera and create travel DVDs of our trips. Does anyone here use that to edit the Phantom vids? I can see this drone purchase morphing into a vampire that sucks money as well as blood! Thanks for advice!