ISLAMABAD: Pakistan Telecommunication Company Limited has announced planned maintenance on one of its critical submarine cables starting April 14 and potentially lasting until April 20.
The development has raised immediate concerns among millions of internet users nationwide as the work targets a vital international connectivity link.
PTCL stated that the repair, carried out by an international cable consortium to fix an existing fault, could lead to service degradation particularly during evening peak hours.
Submarine cables form the backbone of Pakistan’s international internet traffic, carrying the vast majority of data flowing in and out of the country.
With over 117 million internet users in Pakistan as of late 2025 representing 45.6 percent penetration, even minor disruptions can affect daily digital activities on a massive scale.
Recent household surveys indicate internet access has expanded to 70 percent of Pakistani households, up significantly from earlier years, underscoring the growing reliance on stable connectivity.
Mobile broadband subscribers stand at approximately 155 million while fixed broadband continues to grow, making reliable international bandwidth essential for everything from e-commerce to remote work and education.
PTCL, as the primary manager of Pakistan’s undersea optical fibre networks, regularly coordinates such maintenance with global partners to ensure long-term infrastructure health.
Similar past repairs on systems like SMW4 and IMEWE have occasionally caused temporary slowdowns, yet the company has consistently activated alternate routing to mitigate impacts.
Users may experience slower browsing speeds, higher latency in video streaming, delays in large file transfers, and occasional interruptions in international website access during the maintenance window.
The announcement comes at a time when digital Pakistan initiatives continue to drive economic growth through enhanced connectivity.
Pakistan’s telecom sector has shown robust expansion with millions of new 3G/4G users added in recent periods, supporting a vibrant online ecosystem.
Experts note that proactive repairs like this prevent larger outages that could otherwise stem from unrepaired faults accumulating over time.
PTCL has urged customers to plan their online activities accordingly and expressed regret for any inconvenience caused during the essential work.
The maintenance period spans a full week, allowing technicians sufficient time for thorough fault resolution without rushing the delicate underwater operations.
Cable ships and specialized crews typically handle such repairs at sea, involving precise location of faults, retrieval of cable sections, and splicing of new segments.
Pakistan benefits from multiple landing stations, primarily in Karachi, connecting to several international cable systems that link the country to Europe, the Middle East, and Asia.
This diversified network provides redundancy, enabling PTCL to reroute traffic during maintenance on any single cable.
Despite the expected degradation, officials emphasize that core domestic services should remain largely unaffected as the work focuses on international segments.
Businesses engaged in global trade, freelancers serving international clients, and students attending online classes are advised to schedule heavy usage outside evening hours.
The development highlights Pakistan’s deepening integration into the global digital economy where undersea infrastructure plays a pivotal role.
Ongoing investments in fibre optics and new cable projects continue to bolster national capacity, reflecting commitment to digital resilience.
Users are encouraged to monitor official PTCL updates for any real-time adjustments during the April 14 to 20 period.
As Pakistan advances its digital transformation agenda, such routine yet critical maintenance ensures the reliability of connectivity that powers modern life and economic progress.
