Searched for this and could not find an answere, just curious since my son has a mavic pro and i a phantom 3 std. Actually got to fly it for the first time today. I'm susposed to be retired but always to much work, not enough play. One other question. The range and altitude are fine for me. Should line of sight be maintained, or are some trees that would hide the drone. Thanks for the answeres.

No, the batteries are not the same.

It's best to fly LOS. If any obstacles come between the remote controller and drone, the signal will either be weakened or completely disconnected.

It’s best to fly above any obstacles, maintaining direct communication with your flight kit.


RedHotPoker

First, the batteries are different between the two craft.  

Next, Visual Line Of Sight (VLOS) operations; means exactly that, keeping the unmanned aircraft in visual-line-of-sight at all times. This means not flying an unmanned aircraft into clouds or fog, not behind trees, buildings or other [even partial] obstructions. VLOS also means un-aided vision except for prescription glasses or sunglasses, and not having to use binoculars, telescopes or zoom lenses to see the unmanned aircraft.

Ok, well that answers my questions. Thanks a lot.

The Voltage of these 2 batteries is different, Mavics have 3S lipos(11.1V) and the phantoms have 4S lipos(15,4 V)
Do not try to let the  bird fly behind any object. You´ll have a signal loss and get a RTH if you have luck.