CSL System Maintenance and Schedule
3G & 4G Services will be affected during 02:00-04:00, actual outage time less than 15 mins
(Note: CSL system maintenance originally scheduled for 10-Feb have been changed to 11-Feb, and Kowloon City and Tai Po have been added to the affected areas .)
| Date | Affected Area |
| 27-Jan | HK island south, Kowloon east, middle and west, SaiKung, Lantau island |
| 29-Jan | ShamSuiPo, MongKok |
| 5-Feb | Causeway Bay, Eastern, MongKok, WanChai, SaiKung, Shatin, TaiPo, LanTau Island, YuenLong, YauTsim, indoor Ocearnpark, SpaceMuseum |
| 11-Feb | Kowloon City, TaiPo, ShamSuiPo |