According to the phone specs, the Poco F4 GT supports:
Supports 5G* / 4G / 3G / 2G
5G: Supports NSA + SA
5G: n1 / 3 / 5 / 7 / 8 / 20 / 28 / 38 / 40 / 41 / 77 / 78
4G: LTE FDD: Band 1 / 2 / 3 / 4 / 5 / 7 / 8 / 12 / 17 / 18 / 19 / 20 / 26 / 28
4G: LTE TDD: Band 38 / 40 / 41
3G: WCDMA: Band 1 / 2 / 4 / 5 / 6 / 8 / 19
2G: GSM: Band 2 / 3 / 5 / 8
These bands are defined here, https://www.4g-lte.net/about/lte-frequency-bands/fdd/
Problem is Koodo only declares they support 4G LTE and 4G LTE Advanced, and the frequencies they reportedly comply with don’t align with the FDD bands that I linked to.
Thanks.