You cannot download an "FSX.apk" from an official store, but you can play the latest version of the franchise using cloud technology.
: Known for stunning 3D graphics and highly detailed cockpits that rival desktop visuals. Microsoft Flight Simulator X For Android
: If you own FSX on a PC, apps like Steam Link or Moonlight allow you to stream the game from your computer to your mobile device over Wi-Fi. You cannot download an "FSX