To migrate your WhatsApp data from an Android device to an iPhone 14, you can use the official WhatsApp migration tool called "Move to iOS." Here's a step-by-step guide on how to do it:

"Move to iOS" is an official app developed by Apple that is designed to facilitate the migration process from an Android device to an iOS device, such as an iPhone or iPad. It is available on the Google Play Store and is intended to make the transition from Android to iOS smoother for users who want to switch their mobile operating system.

Note: This process requires both your Android device and iPhone 14 to be connected to a stable Wi-Fi network.

On your Android device:

1. Make sure you have the latest version of WhatsApp installed on your Android device.
2. Open WhatsApp and go to Settings.
3. Tap on "Chats" and then "Chat backup."
4. Choose the backup option that suits your preference (Google Drive, iCloud, or local storage).
5. Complete the backup process by following the on-screen instructions.

On your iPhone 14:

1. Turn on your iPhone 14 and go through the initial setup process until you reach the "Apps & Data" screen.
2. Tap on "Move Data from Android" when prompted.
3. On your Android device, open the Google Play Store, search for "Move to iOS," and install the app.
4. Open the "Move to iOS" app on your Android device and tap "Continue."
5. On your iPhone 14, tap "Continue" and wait for a code to appear.
6. On your Android device, enter the code displayed on your iPhone 14.
7. Select the data you want to transfer, which includes your WhatsApp chats, and tap "Next."
8. The data transfer process will begin, and you need to keep both devices connected to a stable Wi-Fi network until it's completed.

After the transfer is finished:

1. On your iPhone 14, follow the on-screen instructions to complete the setup.
2. When you reach the Apps & Data screen, select "Restore from iCloud Backup" and sign in with your Apple ID.
3. Choose the backup that contains your WhatsApp data and complete the restore process.
4. Once the restore is complete, open WhatsApp on your iPhone 14 and verify your phone number.
5. WhatsApp will detect the backup and prompt you to restore your chats. Tap "Restore" to proceed.
6. Wait for the restoration process to finish, and your WhatsApp data should be available on your iPhone 14.

Please note that while this method transfers your WhatsApp chats, and other data it does not transfer your WhatsApp media (photos, videos, etc.). You may need to manually transfer those files using methods such as emailing them to yourself or using cloud storage services.