There are a few ways to back up your phone numbers on your iPhone. You can use iCloudto back up your contacts, or you can use a third-party app to back up your contacts.
To back up your contacts using iCloud, go to Settings iCloudiCloudBackup. Turn on iCloudBackup and tap Back Up Now. Your contacts will be backed up to iCloud.
To back up your contacts using a third-party app, download an app such as Copy or Backupify. These …
