CSL System Maintenance and Schedule
4G Services will be affected during 02:00-04:00, actual outage time less than 15 mins
| Date | Affected Area |
| 27-Aug-2025 | Tuen Mun, Yuen Long, Northern |
| 2-Sep-2025 | Sai Kung, Tai Po, Shatin |
| 4-Sep-2025 | Kwai Tsing, Tsuen Wan, Islands |
| 9-Sep-2025 | Yau Tsim, Mong Kok, Shan Shui Po |
| 11-Sep-2025 | Kowloon City, Wong Tai Sin, Kwun Tong |
| 16-Sep-2025 | Central, Western, Wanchai, Causeway Bay |
| 18-Sep-2025 | MTR, Eastern, South |