This incompatibility will prevent users from receiving support and upgrade to new features from WhatsApp. By: Talha Olasunkanmi On the 1st of November 2021, the Facebook-owned messaging app WhatsApp will stop working on 43 different models of smartphones that run on operating systems older than Android OS 4.1, Apple’s iOS 10 and KaiOS 2.5.1. This incompatibility will prevent users from receiving support and upgrade to new features from WhatsApp. Here is the list of WhatsApp incompatible devices come Nov. 1; Apple – iPhones running on iOS 9.• iPhone 4S, iPhone 6S, and 6S Plus. Samsung – The following Samsung phones…