does anyone knows how to connect a second device like an ipad to the mavic?

You can only have one device connected at a time.

Just as trance728- mentioned, you cannot connect second device to the Mavic.

But you can stream it.

Thank you problem solved

Ziid Posted at 2016-12-19 01:22
But you can stream it.

Is this a built in feature, or is it using something like chromecast screen casting?(sorry about reviving an old topic)

If you are using Crystalsky, you could.