If this is android, I just stick my phone in airplane mode.Apparently since the latest update we need to do the following:
Yes, there are now 2 more steps with the new firmware. When you enable fake location, go to your phone settings, location settings, on 'improve accuracy' turn off 'wifi scanning', and then change 'locating method' to 'battery saving mode'. Enter dji go app and it should change to fcc. Once that's done just change your location settings back to normal. Let me know if this works for you.