To easily identify the contacts you have on the iPhone and iCloud you have to know what you have to re-add can use the following steps:
- Open the Phone app on your iPhone.
- Select the Groups option in the upper left.
- Select the whole section on my phone.
- Accept configuration change and visualize all contacts are that you have to create for syncing with iCloud again appear on all your devices synchronized with the service cloud storage again
With these quick steps and configuration changes, you can easily retrieve all your contacts and correcting the drawbacks updates iOS on iPhone and iPad that end up changing without affecting our default settings to save contacts and manage the control of new contacts added to the mobile. If you have any other problems with your contacts to update iOS, please tell us through the comments.