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"Seventy-three percent of Ukraine's mobile network is already working after the largest blackout arranged by the Russians," Fedorov wrote.
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"Thanks to the active work of energy workers, who quickly restored the light, mobile operators reconnected half of the base stations."
The situation has significantly improved in Kirovohrad, Dnipropetrovsk, Volyn, Mykolaiv, Poltava, Kharkiv and Zhytomyr oblasts, Fedorov noted.
Connections have also been stabilized in Cherkasy, Lviv, Rivne, Vinnytsia and Chernivtsi oblasts.
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Repair work is ongoing.
"We still have communication difficulties in other regions," Fedorov said.
"The most significant problems are in Donetsk and Zaporizhzhya oblasts. But energy and telecom companies are working 24/7 to restore communication to people throughout Ukraine as soon as possible."