The developers of these messengers have announced that they will stop supporting older devices next year. WhatsApp will no longer work on some older handsets from the beginning of 2021. If you own a device running iOS 9 or later and Android 4.0.3 or later, you will not have this problem.
Due to this issue, iPhone 4 and older iPhones, as well as some Android phones such as the Galaxy S2, which was released in 2011, will not have access to WhatsApp from January 12th.
It is possible that the developers have released an update for their products but users are not very interested in installing it and this issue comes at the cost of not having access to WhatsApp. With this in mind, users can check for any updates for their iPhone or Android phone before January 1, 2021.
If you have an iPhone, you can go to Settings and then the General and Software update sections to get the latest update. To find out the iOS version of your phone, in the General section, tap About.
On your Android phone, by going to the settings section, you can find out the information of your device in the About Phone section. If your phone is running iOS 9 and Android 4.0.3 or later, you will not have to worry about WhatsApp inefficiency.
Users of older phones who can not update their device will be deprived of some features of these messengers from January 12 or can no longer use it. Therefore, in order to use this program again or completely, users must update their phones. Not a large number of users are expected to use older iPhones because, according to Apple, only 10% of iPhones use older operating systems than iOS 13.