... 50Mbps Support LTE,DC-HSPA+,HSPA+,WCDMA(UMTS) 4G LTE-FDD 2600MHz,3G UMTS 900/1900/2100MHz ZTE AL621 Unlocked 100Mbps 4G ... to 50MbpsDC-HSPA+ DL up to 42MbpsLTE FDD 2600MHzDC-HSPA+/UMTS 2100/1900/900MHzEDGE/GPRS 900/1800MHzEasy to installPlug and PlayOS ... LTE frequency 2600MHz and compatible with the 3G DC-HSPA+/UMTS networks, auto switch between 4G/3G/2G, up to 100Mbps and ...