Wireless frequencies for 3G, 4G, LTE and 5G vary by network. Internal 64GB 4GB RAM. Speed HSPA, LTE. 2G bands GSM 850 / 900 / 1800 / 1900. Network : Factory Unlocked, works on US and International GSM networks (The phone is NOT compatible with CDMA networks, such as Verizon, Sprint, Boost, etc.).