How to Retrieve Contacts on iPhone

Check Your iCloud Account
If you have enabled iCloud Contacts on your iPhone, your contacts will be synced to your iCloud account. To check if your contacts are still available in your iCloud account, go to www.icloud.com and sign in with your Apple ID and password. Once you are logged in, click on the Contacts icon. If your contacts are available, you can export them to a vCard file and then import them back to your iPhone.
To export your contacts from iCloud, select all the contacts by pressing Command+A on Mac or Control+A on Windows. Then click on the gear icon at the bottom left corner and select “Export vCard”. Save the vCard file on your computer and then transfer it to your iPhone using AirDrop, email or any other file-sharing method. To import the vCard file to your iPhone, open the Mail app or any other app that supports vCard files, tap on the attachment, and select “Add All Contacts”.
Use iTunes Backup
If you have backed up your iPhone to iTunes before losing your contacts, you can restore the backup to get your contacts back. To do this, connect your iPhone to your computer and open iTunes. Click on the iPhone icon and then click on “Restore Backup”. Select the backup that contains your contacts and click on “Restore”. Wait for the process to complete and then disconnect your iPhone from the computer.
Note that restoring a backup will erase all the data on your iPhone and replace it with the data from the backup. Therefore, you should make sure to back up your iPhone regularly to avoid losing your data. Also, if you have made any changes to your contacts after the backup was created, those changes will not be included in the backup and you will lose them after the restore.
Restore Contacts from iCloud Backup
If you have enabled iCloud Backup on your iPhone and have a recent backup that includes your contacts, you can restore the backup to get your contacts back. To do this, go to Settings > General > Reset and then select “Erase All Content and Settings”. This will erase all the data on your iPhone and make it ready for a new setup.
During the setup process, you will be asked if you want to set up your iPhone as a new device or restore it from an iCloud backup. Choose the “Restore from iCloud Backup” option and sign in with your Apple ID and password. Select the backup that includes your contacts and wait for the restore to complete.
Note that restoring an iCloud backup will erase all the data on your iPhone and replace it with the data from the backup. Therefore, you should make sure to back up your iPhone regularly to avoid losing your data. Also, if you have made any changes to your contacts after the backup was created, those changes will not be included in the backup and you will lose them after the restore.
Use Third-Party Software
If you have tried the above methods and still cannot get your contacts back, you can use third-party software to recover them. There are many software programs available that can recover lost data from iPhone, such as Tenorshare UltData, Dr.Fone, and EaseUS MobiSaver.
To use these software programs, you need to download and install them on your computer. Then connect your iPhone to the computer and run the software. Follow the on-screen instructions to scan your iPhone for lost data and recover your contacts.
Note that third-party software may not always be reliable and can potentially harm your device. Therefore, you should only use reputable software from trusted sources and back up your iPhone before using any third-party software.
Contact Apple Support
If none of the above methods work for you, you can contact Apple Support for further assistance. Apple Support can help you troubleshoot the issue and may provide additional solutions to retrieve your lost contacts.
To contact Apple Support, go to the Apple Support website and select your device. Then choose the issue that best describes your problem and select the “Get help” option. You will be given several options for getting help, such as phone support, chat support, or email support. Choose the option that works best for you and follow the on-screen instructions to get in touch with Apple Support.
Note that Apple Support may require additional information from you, such as your Apple ID and password, to verify your identity and provide assistance. Therefore, make sure to have this information available when you contact them.