Mobile phones typically store deleted contacts in a database called the “Recycle Bin.” This database is not accessible to the user, but can be accessed with a third-party app.
If you haven’t synced your contacts to iCloud, Google, or other sources, then the answer is no. If you have synced your contacts to a service that stores them on a cloud server then the answer is yes.
If you haven’t synced your contacts to iCloud, Google, or other sources, then the answer is no. If you have synced your contacts to a service that stores them on a cloud server then the answer is yes.
There is no way to retrieve deleted contacts without a backup.
The quickest way to retrieve deleted phone numbers is to use a free app called “Recover My Files” (https://www.recovermyfiles.com/). The app can scan your device for deleted files and then recover them if the file type is supported.