Sony Xperia XA1 Ultra was officially announced in February 2017, Device released in May 2017 Sony Xperia XA1 Ultra made under Xperia.Mobile Network Support and BandSony Xperia XA1 Ultra have Dual, (Optional Single Sim Model) Card Slot,Sony Xperia XA1 Ultra support all GSM Based network providers. Sony Xperia XA1 Ultra 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 1700,HSDPA 1900,HSDPA