As of November 1, foreign media reports that a large number of older smartphone models will not have access to the WhatsAapp social media app.
It is reported that as technology advances, those advanced technologies will not be able to update these older smartphones and will not be able to maintain that.
This is said to be the case for phones with a lower operating system similar to iOS 9 for the iPhone and phones with Android 4.0.3 or less.