4 July 2014 Last updated at 04:11 ET
Screenshot of Line’s Weibo account on 4 July at 3pm.
Thousands of Chinese users of messaging app Line have taken to the app’s Weibo account to complain
Several popular messaging applications and file-sharing services appear to have been blocked in mainland China this week.
These include mobile messaging apps Line, which is widely used in Asia, and Kakaotalk.
Yahoo’s photo-sharing service Flickr and Microsoft’s file storage service OneDrive have also been affected.
The move appears to have taken place ahead of a major pro-democracy protest in Hong Kong on Tuesday.
China already blocks popular social media services Facebook, Twitter and Youtube.
Yahoo told agencies that it was investigating the situation, while Line said on its Weibo account that it was working to fix the problem.
The disruption has affected users of Line in particular. The service has more than 400 million users, mostly in Asia. Thousands of Chinese users have flooded Line’s Weibo account with complaints.
People march on a street during the annual pro-democracy protest on 1 July 2014 in Hong Kong.
Organisers estimate 510,000 protesters took part in Hong Kong’s rally; police put the number much lower
A Line spokesman told Bloomberg that its users in China had not been able to access all services since 1 July, which was the anniversary of Hong Kong’s handover to the mainland.
Tens of thousands took to the streets of Hong Kong that day in a major pro-democracy protest.
