While there is no confirmation whether this is a testing phase, many users from different parts of the country have reported connecting to this band, also known as LTE B5, on Claro's network.
Thus, Claro Chile becomes the first mobile operator to offer a 4G network in four different bands: B2 1900 MHz, B7 2600 MHz, B28 APT 700 MHz, and B5 850 MHz.