Aggregation of 2 LTE bands, as the basic LTE800 from this BTS and a second additional LTE1800 or LTE2100 band. Sector one, at 800MHz, poor signal parameters and terrible SINR. How does the DL/UL speedtest perform in these conditions? Provide an approximate location, how far are you from this BTS?
Of course, you can force specific individual bands and check LTE2100/LTE1800 and LTE800, each with screenshots with BTS data and signal parameters and speed tests, but on LTE capacitive bands the signal is probably even worse. After these tests, the selection of 2 bands for aggregation, screenshots from the HiLink and speedtest applications, and finally the decision to purchase an external directional antenna.
Helpful post? Buy me a coffee.