Doogee's latest rugged phone looks like it has a smartwatch growing out the back

Cell phones have been experimenting with multiple screens since long before the days of smartphones, but the past few years have really seen things get nice and weird (in the best way possible). We've checked out everything from foldables with little external displays, to whatever fever dream led to the twisting, turning LG Wing. Today we're being introduced to another secondary-screen oddball, as Doogee launches its rugged S98 handset with an unusual circular screen on the back.