The world's most used instant messaging app Whatsapp supports operating systems such as iOS, Android, and KaiOS. It is also being run on web versions of Windows and macOS. However, the company keeps adding new features at the moment, that's why this app stops working for some older devices. Now the latest devices in this list are some iPhones of Apple.

Won't work on these phones: Whatsapp will now stop working on iPhones that run on iOS 9. The beta version of Whatsapp 2.21.50.11 had terminated support on these iPhones earlier and now the stable version of Whatsapp will also not work on these phones. This directly means that consumers of iPhone 4 and 4s will not be able to run Whatsapp on their phones.

If you have iPhone 5, 5s, and 5c and are still using the iOS 9 operating system, you may have to upgrade to iOS 10 to use Whatsapp. iOS 9 has also been withdrawn from the list of supported devices from the official page of the company. That is, if you are an iPhone user, you must have a version of iOS 10 or above.

Take a backup in time: The iPhone 4 and iPhone 4s are phones older than 10 years. It may not be possible to upgrade it above iOS 9. You may have to change the phone to use Whatsapp. However, if you want to keep the same phone, it is better to back up your Whatsapp chat.

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