The death toll from Typhoon Yagi and its subsequent rain that triggered floods and landslides has climbed to 87 as 70 others remain missing and hundreds were injured, state media said.

Yagi was the strongest typhoon to hit Vietnam in decades when it made landfall Saturday. It weakened, but officials have warned of more possible floods and landslides.

Manufacturers say that while many factories acted early to minimize damage, roughly 10 percent of buildings in Haiphong are deeply damaged.

Vietnam is preparing for more flooding with a tropical depression forecast to strengthen into a storm as it heads to its central coast, days after typhoon Yagi set off floods and landslides that killed more than 290 people in the north.

A decade-old picture of a Philippine city flattened by Typhoon Haiyan, one of the strongest storms ever recorded, has resurfaced in social media posts that falsely portrayed it as showing the damage caused by Typhoon Yagi in Vietnam.

Vietnam has postponed its planned 2G shutdown until next month following the impact of Typhoon Yagi. The switch-off had been set to take place by September 16 on land, however, the country's Ministry of Information and Communications has delayed the date until October 15 as more than three million people in the country are using the service.

Typhoon Yagi, Asia's most powerful storm this year, was downgraded to a tropical depression on Sunday, after wreaking havoc in northern Vietnam, where it damaged factories and infrastructure in export-oriented industrial hubs.