Asus Zenfone Pegasus 3s was officially announced in January 2017 , Device released in January 2017 Mobile Network Support and BandAsus Zenfone Pegasus 3s have Hybrid Dual Sim, (Micro Sim + Nano Sim) Card Slots, Asus Zenfone Pegasus 3s support all GSM Based network providers. Asus Zenfone Pegasus 3s mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1900,HSDPA