THIS WILL ONLY HELP WHEN USING A CELLULAR DEVICE - whether your using just your phone or phone to remote, When your going to go fly put your cellphone in airplane mode then turn WiFi back on before connecting to your spark.  Most phones jump between WiFi connection and cellular connection in an attempt to have the strongest connection. When this happens it can cause loss of connection which will cause erratic  drone behavior.   Your phone doesn’t know to NOT lose the connection to a drone, it only knows to continually check for a cellular/WiFi connect You won’t, or at least shouldn’t be answering a call or replying to a text when flying anyway so fly with airplane mode on and you will be streamlining the connection to your drone. Many fly away issues can be resolved by this method because it will greatly decrease the chance of losing WiFi connection to your drone because your only allowing one type of connection

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Useful!
But it's better: Switch your phone to Airplane mode to stop all radio even Wi-Fi. Connect your phone to the green-lit remote with an OTG cable. The DJIGO4 starts up automatically and is already connected. This method is best because the phone wi-fi does not work, does not immerse the phone, and even the remote control charges. Experience has shown that the range is longer and the delay of the live video signal is also smaller. The system is more stable.

Jakab Gipsz Posted at 9-10 14:45
Useful!
But it's better: Switch your phone to Airplane mode to stop all radio even Wi-Fi. Connect your phone to the green-lit remote with an OTG cable. The DJIGO4 starts up automatically and is already connected. This method is best because the phone wi-fi does not work, does not immerse the phone, and even the remote control charges. Experience has shown that the range is longer and the delay of the live video signal is also smaller. The system is more stable.

Exactly Jakab, using an OTG cable is the way to reduce possible interference problem as much as possible.
Of course, disabling cellular services is important to do before flying.

Cheers,
Wolferl