CSL System Maintenance and Schedule
3G, 4G and 5G Services across Hong Kong will be affected during 02:00-04:00, actual outage time less than 15 mins
| Date | Service Affected |
| 23-Jul | Southern, KwaiTsing |
| 28-Jul | KwunTong, WongTaiSin |
| 30-Jul | MTR, ShaTin, TaiPo |
| 4-Aug | MTR, Northern, TusenWan |
| 6-Aug | Eastern, SaiKung |
| 11-Aug | Central West, KowloonCity |
| 12-Aug | Tuen Mun, Yuen Long, Northern |
| 13-Aug | Island District, MongKok |
| 18-Aug | YuenLong, YauTsim |
| 19-Aug | Sai Kung, Tai Po, Shatin, Kwai Tsing, Tsuen Wan, Islands |
| 20-Aug | ShamShuiPo, WanChai |
| 25-Aug | KwunTong, WongTaiSin |
| 26-Aug | Yau Tsim, Mong Kok, Shamshuipo, Kowloon City, Wong Tai Sin, Kwun Tong |
| 27-Aug | MTR, ShaTin, TaiPo |
| 2-Sep | Central & Western, Wanchai & Causeway Bay, MTR, Eastern, South |