PTCL Submarine Cable Maintenance: Nationwide Internet Slowdown Expected Until April 20

Beware of impaired connectivity and reduced speeds throughout Pakistan as PTCL starts planned repairs on the SMW4 submarine cable. This week-long maintenance that will run between April 14 and April 20, 2026, mainly affects evening bandwidth. During this essential technical upgrade, freelancers and IT firms need to calculate a high latency and the lags the service can have.

Pakistan’s internet landscape is currently facing a hurdle as PTCL submarine cable maintenance begins today. This isn’t a random glitch. It is a strategic, pre-planned repair mission.

The international cable consortium recently identified a fault in the SMW4 (South East Asia–Middle East–Western Europe 4) system. This undersea infrastructure acts as a digital backbone for the country. To fix the issue, engineers started work on April 14. This PTCL submarine cable maintenance ensures we avoid total outages in the future.

The work concludes on April 20. Evening will be your most affected time. This is the time that causes the greatest burden on the rest of the available bandwidth. If you are a freelancer or run an IT company, expect higher pings and slower upload speeds.

PTCL is in the process of rerouting traffic via alternative cables such as AAE-1 and SMW5. Although these have backups that help in keeping us online, they do not fully substitute the capacity of the SMW4. This rerouting brings about the current “bottleneck” effect. By next Monday, the PTCL submarine cable maintenance wrap-ups should be back to normal so that stability is restored.

Rida Shahid

Rida Shahid is a content writer with expertise in publishing news articles with strong academic background in Political Science. She is imaginative, diligent, and well-versed in research techniques. Her essay displays her analytical style quite well. She is currently employed as English content writer at hamariweb.com.