CAIRO (AP) -- A breakdown in communications networks in central and southern Gaza has cut many Palestinians off from the outside world for the past week, further straining aid efforts and emergency services amid continuing Israeli bombardment.

Israeli strikes damaged a main connection, cutting off communications in large areas of the strip since Tuesday, according to the Telecommunications Regulatory Authority, based in the Israeli-occupied West Bank. The telecom company Paltel said Friday that internet and landline services were restored in some areas in southern Gaza, including Khan Younis, with repairs ongoing in other southern and central areas.

Paltel warned in a statement to AP that ongoing attacks on the main network could make future maintenance impossible, especially due to a shortage of essential materials and resources.

The Gaza Strip has experienced at least 10 communications partial and full outages since the war began in October 2023, according to Palestinian telecom company Paltel. This week's outage has impacted aid efforts, emergency services, suspended academic classes, and cut off displaced Palestinians from the rest of the territory.

Palestinians in Gaza rely heavily on cell service, as unsafe roads and fuel shortages limit movement across the enclave. Humanitarians say those in affected areas will struggle to access information on aid and medical services or call for ambulances.

"Telecoms have been used as a weapon of war against civilians," said Juliette Touma, communications director at UNRWA, the U.N. agency for Palestinian refugee that is the main service provider in Gaza.

The IDF didn't immediately respond to request for comment.

The vast majority of UNRWA workers don't have connectivity in the areas affected by the outages. As a result, they and other aid workers have struggled to deliver aid and coordinate with one another, Touma told the AP.

"Sometimes we get a signal when a team member has the courage to go on the rooftop of a building, which is extremely dangerous under strikes, and they send us a message that they're alive. I can't tell you how much of a relief it is, but they're more sporadic and less regular," said Touma. Some people rely on E-sims, but they are not compatible with all devices and can only work in certain areas.

Over 70% of telecommunications networks in Gaza has been partially or completely destroyed as of August 2024 since the war began, according to statistics released by the Palestinian Ministry of Telecommunication and Digital Economy, cited by the Palestine Economic Policy Research Institute. However, Paltel said technical teams offered some technical solutions that would restore services.

When they hear nearby strikes, Palestinians without connection don't know whether evacuation orders are issued and where should they relocate to, said Shaina Low, the Norwegian Refugee Council's communications adviser.

"This also means that people are isolated. They can't communicate with their family and friends inside of Gaza and understand what the current situation is or get external support from networks outside," she said.

Limited or unreliable mobile service has made it difficult for ambulances and civil defense teams to reach people in need of life-saving assistance, Low added.

Fikr Shalltoot, Gaza director for the group Medical Aid for Palestinians, said its doctors working in hospitals and clinics in effected areas can't document or share their work with managers.

Meanwhile, with Gaza's university campuses heavily damaged, the internet has become the only way to continue education. But outages have forced educators to cancel classes and exams.

"It is, unfortunately, like a never-ending vicious cycle of suffering because when this issue is resolved in the north, the problem appears in the south," said Mohammed Shbair, vice president for administrative and financial affairs, at al-Azhar University in Gaza.

"Students cannot reach universities because they are destroyed, and they can't even reach areas where the internet is available in cafes or displacement tents, as they are now being targeted daily and systematically by Israeli strikes," said Shbair, an associate professor of public law.

Online banking, a key alternative amid cash shortages, has also become unavailable. Palestinians who rely on online transfers to pay suppliers can no longer do so under the current conditions, according to Low.

The outage complicates humanitarian operations and adds to the "toxic stress" families face daily, said UNICEF spokesperson Tess Ingram.

"In a context of incessant bombardments, mass casualty events linked to food distributions, rising malnutrition and dwindling access to clean water, connectivity is a real lifeline for families in Gaza," she said.