VIVO X20 Plus UD, latest mobile phone specifications, features and price January 26, 2018 VIVO X20 Plus UD is latest model smart phone by vivo with 6.43 inches display screen having 12 mega pixels main back camera. The Vivo X20 US come with 4 GB RAM (Snapdragon 660), 3900 mAh Li-Ion battery. The weight of this mobil…