Open Settings
Tap General
Tap Software Update
Wait for your iPhone to check for updates
Tap Download and Install if iOS 26 is available
Enter your passcode if prompted
Agree to the terms and conditions
Keep your iPhone connected to Wi-Fi and power
Wait for the download to complete
Tap Install Now or let it install automatically
Wait for the iPhone to restart and finish updating
If iOS 26 is not shown, check again later or verify your device supports it