Went flying this weekend with my mavic Pro and a friend with a phantom 3. Both took off at the same time lost signal at the same time. Mine went to return home. The Phantom flu into a big tree. We used the flight log map to find his Phantom. As soon as his hit the tree mine regained signal and was just fine. It would have returned home anyway. I thought you could fly these things together and there was no issue or maybe just coincidence. The Phantom lost a prop broke the landing gear kicked out the battery and the SD card.