Hey

I am new with Dji Spark and I have a question please,
What is better to use? Wifi or OTG connection (I have Samsung Galaxy S8)
and what is the difference between them?

Thank you!

OTG is better in every way
WiFi will reduce your range as there is another connection  Phone + Controller + Drone all WiFi
OTG will increase ur range by a bit and reduce WiFi interference it will be Controller + Drone WiFi  and phone with WiFi off and Bluetooth and 4g offf will give u the best stability possible and range

in short otg will make ur connection more stable and give extra range so use it when possible

Hi and welcome to the forum, well OTG is better for the streaming from the camera you will not feel any delay or lags while on WIFI there is a bit of delay, as in regard to the range i dont think it affect it much but maybe it will reduce any interference between the AC and the RC if you use OTG rather than WIFI
Also there are so many threads here in the forum talked about that issue so many time maybe you can search the forum by typing OTG

cable  !!!

OTG for sure! no hesitation.

Cable connection are always better than wireless.

I also absolutely vote for OTG. Not only is it a more stable connection, more important IMHO is the greatly reduced video lag, at least with my phone (Samsung Galaxy S4 mini VE).

Cheers,
Wolferl

OTG: Don't fly without it.

Hi, thanks for the inquiry. Hopefully, you'll get the best recommendation on which connection you may use. However, we would recommend flying your drone in an open area wherein there are no interferences to avoid the incident. May you please have a safe flight! Thank you for continued support.

I use OTG. I'm thinking it will reduce the need to use WiFi and therefore less heat which leads to longer stable feed.