Have you been able to create an iCloud backup of your defective iPhone 16 before setting up the new iPhone 18?
If yes, try to restore from this backup:
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- Turn on your new device. A "Hello" screen should appear. If you've already set up your new device, you need to erase it before you can use these steps.*
- Follow the steps until you see the Wi-Fi screen.
- Tap a Wi-Fi network to join. Follow the steps until you see the Apps & Data screen, then tap Restore from iCloud Backup.
- Sign in to iCloud with your Apple Account.
- When asked, choose a backup. Make sure that it's the correct one by checking the date and size of each. Learn what to do if you're asked to update to a newer version of iOS or iPadOS.
- If you purchased iTunes or App Store content using multiple Apple Accounts, sign in to each. If you can't remember the passwords, you can skip this step by tapping "Don't have an Apple Account or forgot it."
- Stay connected and wait for the restore process to finish, then complete the rest of the onscreen setup steps. If possible, keep your device connected to Wi-Fi and plugged into power after setup. This allows content like your photos, music, and apps stored in iCloud to automatically download back to your device.
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copied from: Use iCloud to transfer data from your previous iOS or iPadOS device to your new iPhone or iPad - Apple Support
You can also use your PC or Mac, if you have backed up your data to that device:
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- Turn on your new device. A "Hello" screen should appear.
- Follow the steps until you see the Apps & Data screen, then tap Restore from Mac or PC.
- Connect your new device to the computer that you used to back up your previous device.
- Open an Apple Devices, iTunes, or Finder window on your computer and select your device. The system might prompt you to trust your device.
- Select Restore Backup.
- Choose a backup. Make sure the backup is the correct one by looking at the date and size of each.
- If you need to restore from an encrypted backup, enter your password when asked.
- Wait for the restore process to finish, then complete the rest of the setup steps on your iOS or iPadOS device. If possible, keep your device connected to Wi-Fi and plugged into power after setup. This allows content like your photos, music, and apps stored in iCloud to automatically download back to your device.
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copied fro: Use the Finder, Apple Devices, or iTunes to transfer data from your previous iOS device to your new iPhone or iPad - Apple Support
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