Correct. I personally find the DJI RC to be laggy. It is the RC that came with my Mavic 3 Classic, I now use it solely for my mini 3 (not the pro) and I purchased an RC-Pro for use with my Classic, I have not had any range issues with either RC or bird. I do use an external device with my Phantom 3 and GL300C RC.And to be clear you're referring to the tablet/smartphone by, "the device on the N1", right?
I do not have an N1 so I can't comment on it's performance.