In the entry-level segment, a relatively unknown manufacturer leads our rankings: Cubot. In our review, its KingKong ES3 reaches a runtime of almost 26 hours in our Wi-Fi test, which should allow light users to operate the device for several days away from a power socket.
However, the KingKong ES3 is significantly less efficient than the other two smartphones from Oppo and Motorola. Due to its huge 10,200 mAh battery, the entry-level phone is not only heavy, but also comparatively thick and bulky.