Contacts are stored in the “Contacts” app on the iPhone. You can access this app by tapping on the “Phone” app and then tapping on the “Contacts” icon.

There are a few reasons why your contacts might not show up on your iPhone. One possibility is that you haven’t synced your iPhone with your computer or iCloud account. Another possibility is that you have hidden some of your contacts from the iPhone’s contact list. To view all of your contacts, open the Contacts app and tap “All Contacts” at the bottom of the screen.

iPhone contacts are stored on the phone, not the SIM card. If you want to back up your contacts, you can do so by syncing your iPhone with iTunes or iCloud.

Your contacts are stored on your SIM card by default, but you can also store them on your phone. To transfer contacts from your SIM to your phone, open the Contacts app and tap the menu button (three lines in the top left corner). Select Import/Export and choose Export to Phone.

To retrieve your contacts on an iPhone, open the “Settings” app and select “Mail, Contacts, Calendars”. Under “Contacts”, tap “Sync Contacts” and make sure that the switch is turned on. If you want to sync your contacts with iCloud, turn on the switch next to “iCloud”.

There are a few ways to delete your iPhone contacts. The first way is to go to your contacts list and tap on the “edit” button in the top right corner. Then, tap on the red minus sign next to the contact you want to delete. The second way is to open the contact and then scroll down to the bottom and tap on “delete contact.

If you switch SIM cards in iPhones, the phone will ask for the Apple ID and password associated with the old SIM card. If you don’t have that information, you won’t be able to use the phone.

If you have backed up your iPhone contacts to iCloud or iTunes, you can restore them by following these steps:Open the Settings app on your iPhone.Tap on iCloud or iTunes & App Store, depending on where you backed up your contacts.Tap on Restore Contacts.Select which backup you would like to restore from and then tap Restore.

If you have an iPhone 6 or earlier, you can hold down the Home button and the Lock button at the same time to turn it on. If you have an iPhone 7 or later, you can press and hold the Side button and Volume Down button at the same time to turn it on.