Ulefone Armor X31 official Pictures. Ulefone Armor X31 is a Smartphone of ulefone. The Ulefone Armor X31 Android Smartphone. Announced Apr 2025. Features 6.56″ Display, Helio G91 Chipset, 6050 MAh Battery, 128 GB Storage, 6 GB RAM, MIL-STD-810H Compliant, Corning Gorilla Glass 5. Ulefone Armor X31 price starts.