New videos about the operating system have appeared on our YouTube channel Android. In the new video, we review the ASUS smartphone Zenfone 4, equipped with a 5.5-inch Full HD display, an eight-core processor Qualcomm Snapdragon 630, dual (12 MP + 8 MP) main camera and 8MP front camera, 64 GB of internal memory and 4 GB of RAM, a fingerprint scanner, support for 4G / LTE networks and two SIM cards, as well as running the operating system Android 7.1.1 Nougat: