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The social network announced the redesign Monday via the Facebook Mobile Page. The changes, which will gradually roll out to users, come on the heels of Facebook acquiring Instagram for $1 billion in April.
Just last week, Facebook CEO Mark Zuckerberg told investors that mobile is the company's top priority.
Facebook, the world's largest social network, has 901 million users.
"Now photos are up to (three times) larger, and all posts will fill your mobile screen from edge to edge," Facebook wrote. "The new design will be available on iOS, Android and m.facebook.com."