Band 66 adds blocks G-J (AWS-3) and the unique AWS-4 block . AWS-1 and AWS-3 (blocks A-J) are paired bands, meaning phones transmit to towers on different frequencies from what towers transmit to phones on. This prevents interference.
Band 66 adds blocks G-J (AWS-3) and the unique AWS-4 block . AWS-1 and AWS-3 (blocks A-J) are paired bands, meaning phones transmit to towers on different frequencies from what towers transmit to phones on. This prevents interference.