Instant messaging service WhatsApp has been largely blocked in China, the media reported.
Some people access these services through virtual private networks (VPN), or with tools that disguise internet traffic to circumvent censorship. But the Chinese government has launched a crackdown on VPNs this year.
According to Timothy Heath, senior international defence research analyst at the RAND Corporation, the Chinese government does not like that WhatsApp uses strong encryption.
“The government wants to monitor internet communications, and therefore it`s trying to steer its people to use technology that can be accessed and monitored by the government,” Heath told.