WhatsApp for iPhone 7 Plus

WhatsApp is ending support for iOS 15 and older, and the iPhone 7 Plus tops out at iOS 15.8.x, so it falls below WhatsApp's minimum requirement. While the app stays installed it keeps running for now, but once support is dropped you can no longer send or receive messages, and you won't be able to reinstall it. Back up your chats first: open WhatsApp, go to Settings > Chats > Chat Backup, and run a backup to iCloud so you can restore them on a newer phone later. See how others solved this on Reddit

First try the basics: force-close WhatsApp (swipe up from the bottom and flick the card away), toggle Airplane Mode on and off to refresh the connection, and check the App Store for any WhatsApp update. If it still won't connect, the cause is usually the iOS 15 support cutoff rather than a fixable bug, so the lasting solution is moving to a phone running a newer iOS. Before changing anything, make a chat backup via WhatsApp > Settings > Chats > Chat Backup so nothing is lost. See how others solved this on Reddit

The App Store now serves only the newest WhatsApp, which the iPhone 7's iOS version can no longer run, so the install fails or shows as incompatible. Try opening the App Store, tapping your profile icon, then your account name to view purchased apps, and search for WhatsApp there — when you reinstall an app you previously owned, iOS sometimes offers to download the last version compatible with your device. If that option doesn't appear, WhatsApp can't be reinstalled on that phone, and you'll need to set it up on a supported device and restore from your iCloud chat backup. See how others solved this on Reddit

On the iPhone 7, open WhatsApp > Settings > Chats > Chat Backup and run a fresh backup to iCloud using the Apple ID you'll sign into on the new phone. On the new iPhone, install WhatsApp from the App Store, verify the same phone number, and when prompted during setup choose to restore your chat history from the iCloud backup. Both phones must use the same Apple ID and have iCloud Drive enabled, or the backup won't be found. See how others solved this on Reddit

There's no official way once WhatsApp drops iOS 15: the App Store won't offer a compatible version, and the app refuses to launch below its minimum iOS. Jailbreak-based sideloading of an older IPA is the only workaround people attempt, but it's unreliable, tends to break against WhatsApp's server-side checks, and can get your account banned, so it's not recommended. The practical answer is to back up your chats and switch to a phone that runs a supported iOS version. See how others solved this on Reddit

The iPhone 7 and 7 Plus are stuck on iOS 15 with no further updates, and major apps typically drop support a year or two after Apple stops updating an OS — which is exactly why WhatsApp is now phasing out iOS 15 devices. Expect more apps to follow, so treat the iPhone 7 Plus as near end-of-life for new app versions, even though already-installed apps keep working for a while. Keep regular iCloud backups so you're ready to migrate whenever an app finally cuts it off. See how others solved this on Reddit