I have a Phantom 3 Advanced and way back in 2017 is was able to use it with my Samsung Galaxy Express 3 J120A phone. Then I lost that phone and replaced it with another one, but didn't re-install the DJI GO app because I didn't fly the drone for a while. Now I want to fly it again but am getting the impression that you can't get an app for a phone that "old". Is that true? Hopefully not and if not can anyone tell me how to get the app on this phone? Also if it can take the app again will it be able to connect to a new update for the drone? The drone and controller still have the firmware from way back 2 years ago and I want to sell the Phantom and get a Mavic. So should I try to update the firmware in the drone and controller if my phone is still able to handle it? Also will this phone be able to work with a Mavic Air and its controller? Or am I going to have to pay hundreds more dollars for a different phone just to be able to fly DJI drones again?