Basically, Huawei takes all the best things from competitors. May be that's why they can sell them cheaper because there would be no research cost. Sony' Stamina mode for battery saving (the reviewer never mentions Sony has that in its phones for over 2 years now), Samsung's gestures, LG's tap (back) to take photo. HTC's task switcher, not to mention a lot from iOS and iphone design.
Basically, Huawei takes all the best things from competitors. May be that's why they can sell them cheaper because there would be no research cost. Sony' Stamina mode for battery saving (the reviewer never mentions Sony has that in its phones for over 2 years now), Samsung's gestures, LG's tap (back) to take photo. HTC's task switcher, not to mention a lot from iOS and iphone design.