On many occasions, the Mavic disconnects are being caused by the smartphone or tablet which has the DJI Go 4 app installed.  You should have your smartphone or tablet running optimally.

Some best practice regarding smartphones and tablets would be to greatly reduce notifications from the various other apps (Facebook, Twitter, Instagram, Whatsapp etc) while flying.  Also, turn off app updates while flying. Next, remove as many unused apps as possible as these use up both space, memory and processor.

There are programs such as APP Power Monitor which are great to get your smartphone or tablet running optimally.

If your smartphone is not running optimally, then opening the DJI Go 4 app with and recording while flying, might place a heavier load on the device processor or fill up it’s memory.  If the smartphone is running slow then it could easily drop the connection.

Thanks for sharing