无锁美版到底支不支持联通的4G?

2G/2.5G - GSM/GPRS/EDGE:
850/900/1800/1900 MHz
3G - UMTS/ HSPA:
Europe/ Middle East/ Africa: 900/1900/2100 MHz with HSPA+ up to 42 Mbps
Asia: 850/900/1900/2100 MHz with HSPA+ up to 42 Mbps
Canada/ Latin America: 850/1900/2100 MHz up to HSPA+ 42 Mbps
T-Mobile (US): 850/ AWS/1900/2100 MHz with HSPA+ up to 42 Mbps
AT&T: 850/1900/2100 MHz with HSPA+ up to 21 Mbps
Sprint: 1900/2100 MHz with HSPA+ up to 14.4 Mbps
3G - CDMA:
800/1900 MHz for Sprint
4G - CDMA:
Verizon: 800/1900MHZ, UMTS/HSPA 1900/2100MHz,GSM/GPRS/EDGE 850/900/1800/1900MHz, LTE 700MHz (Band 13)
4G - LTE:
Europe/ Middle East/ Africa: 800/1800/2600 MHz
Asia: 1800/2600 MHz
T-Mobile (US)/ AT&T/ Canada/ Latin America: 700 MHz and AWS band
Sprint: 1900 MHz

去年就有+4G？