How can I revert iphone to previous ios 18?

To revert iPhone to previous iOS. You can remove the beta profile from your iPhone Settings :

1. Go to Settings > General > VPN & Device Management

2. Tap the iOS Beta Software Profile and select Remove Profile

3. Restart your iPhone

However, this does NOT downgrade your iOS version . It only stops future beta updates from installing. Your iPhone will remain on exactly the same operating system version it's currently running.

Bottom line: If you want to downgrade iOS 18, you will need to use a computer and enter recovery mode at some point. The only completely free method is the official Apple method, which uses Recovery Mode. Third-party tools that bypass iTunes still require recovery mode and cost money.

Before you revert iPhone to previous iOS:

* Back Up Your Data: Downgrading will erase your device. Crucially, you cannot restore a backup made on a newer iOS version to an older iOS 18 device. Therefore, you must either:

* Have an iCloud backup from when you were previously on iOS 18, or

* Use a third-party tool to back up specific data (like photos or contacts) that is version-agnostic.

* Disable "Find My iPhone": You must turn off Find My iPhone in Settings > [Your Name] > Find My, as it prevents the restore process.