Very similar experience to mine today.....sudden disconnection despite the drone being fairly close. I think that it was the first time ever that I had had this.....perhaps something in the firmware update??????
Had the wifi on the phone turned off and was in airplane mode, so I do not think that was a cause, but reading your post there are so many similarities.
Technology is great WHEN it works...…
for me its pretty upsetting because I was screwing around with inferior drones for a few months and although I was learning I was getting sick and tired of the firmware issues, gimbal issues and a lack of customer support , researched dji brand and knew its what I needed, I've been treating this drone with kid gloves from day one, its 10 days old haven't even tried sport mode. flew Sunday no problems,
MP2 returned home because of low battery, arrived with 35% left. ...
The flight this past Tuesday was over the exact same location but 1/2 mile closer to my target, a friend who was interested in seeing me fly came out to watch the ''latest Tec'' I boasted about the capabilities gave him a low slow look at this master of the sky's THEN we watched as the drone had signal issues, just 4 minutes into the flight so I pressed RTH , the controller kept beeping saying to relink relink , I kept pressing the relink and nothing, kept pressing RTH yet it just sat there hovering , my friend is looking at me saying ''oh man its going to crash'', I wasn't worried at all, I literally had enough time to jog and catch it if the terrain would let me, then I see its ''landing'' NOOO I did not press land. again the controller is sounding alarm saying to relink...nothing.
I jump in my car and drive 100 yards closer but as I look up its gone and I get a message (cant take off) branches in the picture...im like shocked, my friend says that's on state land and its posted no trespassing because its dangerous area difficult terrain . Did a early morning hike extraction before the rain but the gimbal is damaged and the drone has a noticeable wobble. customer support started a work order and where helpful but if I get a bill for anything over 100.00 I will be pissed, I think there drone made a mistake worst yet I cant fly for 2 or 3 weeks.and now I will be worried it will crash again and I like to fly over water