DJI Phantom 4 Best Drones UAV Review 2017 HD. The Phantom 4, released in March 2016,[5] improves upon usability by adding obstacle avoidance and an ability to track movement, thanks to its many sensors. Some of its features include GPS, GLONASS, sonar, five separate cameras, a camera gimbal, gyroscope, and more. It is slightly bigger and heavier than the Phantom 3 due to larger battery, but it still maintains a longer flight time and greater top speed.Phantom 4 has proven to fly over 4 miles away without obstruction and still continue to have a decent video stream.