YES, the connection also breaks off after about 40 metres, although there is always visual contact. WLAN is probably too weak
The drone does not fly very smoothly and corrects too much. It is also too slow and therefore no longer flyable in medium wind because it then drifts away. For this price, you should be able to expect that.

I don't remember any connection problems. Range estimated at a good 100 metres. I used the Nine Eagles app on iOS 9, but I had several problems with this drone. See my comments. For me, an aberration. By far the drone with the worst flight characteristics. I now own 6 other drones.

Yes I had big problems with the downstream of the video image again and again. I am also still very disappointed with this product in other respects and also still classify it as unusable.

I've only flown it 3-4 times, but I've only connected to the iPhone once.
I am not very enthusiastic about this drone. It's just a question of price.