Lock 500i has two options for internal modem:
TBL5iA for EU / Americas
Bands: LTE-A: B1-B5, B7, B8, B12, B13, B20, B25, B26, B29, B30, B41
TBL5iB for Asia and Pacific
Bands: LTE-A: B1, B3, B5, B7, B8, B18, B19, B21, B28, B38-B41
For country and operator specific bands, see e.g. https://www.frequencycheck.com/countries to check which version to order.