Hello Such,
Welcome to the community!
Such wrote:...
it supports GSM Band 2/3/5/8
...
WCDMA Band 1/2/5/8
FDD-LTE Band 1/3/4/5/7/8/20
TDD-LTE Band 38/40
Judging by those specifications, that phone would have all of the compatible bands/frequencies for both 2G and '3G'. With regards to LTE, that phone would only have two of the compatible bands/frequencies, bands 4 and 7 (1700/2100MHz and 2600MHz, respectively). You can verify the compatible bands/frequencies here. While the phone should work on the LTE networks, coverage depends on the corresponding bands/frequencies available on your surrounding cellular towers as not all bands are used at all towers. You can get an idea of your area cellular towers here.
Hope this helps 
Cheers
