WhatsApp, the messaging app owned by Facebook parent Meta, suffered a global outage on Tuesday.
Problems were first detected around 3:17 a.m., according to Downdetector.com, which monitors outages across internet services.
Users reported problems with sending and receiving messages.
According to Downdetector, a platform that tracks websites, about 11400 people reported trouble with Whatsapp.
In Nigeria, more than 60 million internet users also experienced trouble using the service.
Meanwhile, while 68% of the complainants experienced trouble with sending message via WhatsApp, 19% had issues with server connections.
Similarly, 14% had issues with the entire WhatsApp functionality.
Normal service on WhatsApp had still not been restored at around 4:05 a.m. ET.
Meanwhile, Meta, parent company of Whatsapp, has confirmed the outage.
It however assured users that its team of expert Engineers are working to restore the service to normal functionality.
The messaging service, which has around 2 billion users, is particularly popular in countries such as Nigeria, India and Brazil.