Overview

• Devices unable to upgrade past iOS 15.1—namely the iPhone 5s, iPhone 6 and iPhone 6 Plus—and Android phones running OS 5.0 or earlier, including Galaxy S III and HTC One X, lost WhatsApp compatibility on June 1.
• WhatsApp originally planned to cease support on May 5 but agreed to a four-week extension to give users extra time to prepare.
• The company began notifying iPhone users in January, providing a five-month notice period before cutting off outdated operating systems.
• Users on unsupported devices can still access chat via web.whatsapp.com but will lose full messaging functionality and security updates in the mobile app.
• Impacted users are advised to back up their chat history to iCloud or Google Drive and upgrade to a compatible device to maintain uninterrupted service.