Age limit changes are made to comply with the new data privacy rules that come into effect next month.
WhatsApp will ask European users to confirm that they are at least 16 years old when agreeing to the new terms of service and the privacy policies provided by the new entity WhatsApp Ireland Ltd in the next few weeks.
It is not clear how the age limit will be checked, given the limited data that is requested and held by the service.
Meanwhile, Facebook, which has a separate data policy, takes a different approach for adolescents aged between 13 and 15 to comply with the European Data Protection (GDPR) law.
They are required to include a parent or guardian to grant them permission to share information on the platform.
WhatsApp currently has about 1.5 billion users disclose no new rights to collect personal information in agreements made to the EU.
"Our goal only explains how we use and protect the limited information we have about you," he said.
WhatsApp, founded in 2009, has been under pressure from several European governments in recent years. Because, the end-to-end encrypted message system and their plan will share more data with its parent, Facebook.
Facebook itself is under the supervision of regulators and lawmakers around the world since the case of Cambridge Analytica.
Currently, the minimum usage age of WhatsApp will remain 13 years old around the world, in line with its parents.