The Facebook-owned app will longer run on Android and iPhone devices which only support outdated operating systems.
The company’s website states you can no longer “create new accounts, nor reverify existing accounts on Android versions 2.3.7 and older and iOS 8 and older”.
This is because the app “will no longer actively develop” for those operating systems, meaning some features will stop functioning at any time.
This also includes phones featuring Windows OS.
WhatsApp had withdrawn its support of Windows from December 31, 2019.
Coincidentally, Microsoft also ended support of its Windows 10 Mobile OS on the same day.
On Thursday, Facebook said that about 2.89 billion people use at least one of its services — Facebook, WhatsApp, Instagram or Messenger — each month.
About 2.26 billion people use at least one every day.