ASUS ZenFone 2 ZE551ML 4GB RAM / 64GB ROM 5.5-Inch 2G / 4G Dual SIM Factory Unlocked International Stock No Warranty (Gray/Silver)
This phone comes with Android 5.0 Lollipop (TW). Supports dual-SIM with 2G and 4G for either SIM card (this is NOT dual 4G). Please check with your carrier for compatibility before purchase.