Voice, text and mobile Internet services at Vodafone's Basingstoke data center were affected and the disruption appeared to be widespread, The Daily Telegraph reported Monday.
A Vodafone spokeswoman confirmed the break-in and said some equipment was damaged.
The newspaper said the data center is a major hub for the telephone network and the site has routing equipment worth millions of dollars.
Organized crime gangs sometimes steal networking equipment and send it to Eastern Europe, the newspaper said.
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