Google Pixel 4a Bands

2G B2 (1900), B3 (1800), B5 (850), B8 (900)
3G B1 (2100), B2 (1900), B4 (1700/2100), B5 (850), B8 (900)
4G B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100), B5 (850), B7 (2600), B8 (900), B12 (700), B13 (700), B14 (700), B17 (700), B18 (800), B20 (800), B25 (1900), B26 (850), B28 (700), B29 (700), B30 (2300), B38 (2600), B39 (1900), B40 (2300), B41 (2500), B66 (1700/2100), B71 (600)
5G No

Coverage in Brunei

2G B8 (900)
3G B1 (2100)
4G B3 (1800)
5G No

Operators of Brunei

2G 3G 4G 5G
DSTCom B8 (900) B1 (2100) B3 (1800) No