• Make sure that you have a good cellular network connection on your phone.
• Check that your phone number is one that can receive SMS messages. You can do this by having someone send you a text message.
• Check that you have the correct phone number associated with your account:
  • Devices using iOS 7.0.3 or later: Tap Settings > iCloud > Account, then tap Keychain. Check that the phone number listed under Verification Number is correct. If not, enter another phone number.
  • Macs using OS X Mavericks v10.9 or later: Choose Apple () menu > System Preferences. Click iCloud, then click Account Details. Check that the phone number listed under Verification number is correct. If not, enter another phone number.
• Check Apple System Status to see if there is currently a service outage affecting iCloud Keychain.
• If you do not have access to a device that has iCloud Keychain enabled, you can contact Apple Support and verify your identity for help completing iCloud Keychain setup.

Check the list of countries that have SMS support for iCloud Keychain. If your country is not listed, you can use the steps in that article to set up iCloud Keychain without an SMS-capable phone number.

• Check that the new device is using iOS 7.0.3 or later, or OS X Mavericks v10.9 or later.
• Make sure you have a strong cellular network connection.
• Check Apple System Status to see if there is currently a service outage affecting iCloud Keychain.

First, make sure that your device is currently on a Wi-Fi or cellular network. If the connection appears strong, try the following steps:

1. Turn off iCloud Keychain on all devices.
2. Enable iCloud Keychain on the device that has the most up-to-date keychain items.
3. Enable iCloud Keychain on your other devices. They will be updated with your new iCloud Keychain.

Devices using iOS 7.0.3 or later:

1. Tap Settings> Safari> Passwords & Autofill.
2. Tap Saved Passwords.
3. Enter your device passcode.
4. Tap the website name to view the password.

Macs using OS X Mavericks v10.9 or later:

1. Go to Safari > Preferences and select the Passwords tab.
2. Select “Show passwords for selected sites”.
3. Enter your system password.
4. Select a website in the list to view its password.

Devices using iOS 7.0.3 or later:

1. Tap Settings> Safari >Passwords & AutoFill.
2. Turn on Names and Passwords.

Macs using OS X Mavericks v10.9 or later:

1. Go to Safari > Preferences.
2. In the AutoFill pane, select “User names and passwords”.

Devices using iOS 7.0.3 or later:

1. Tap Settings> Safari> Passwords & AutoFill.
2. Make sure Names and Passwords is turned on.
3. Turn on Always Allow.

Macs using OS X Mavericks v10.9 or later:

1. Go to Safari > Preferences.
2. In the Passwords pane, make sure that “AutoFill user names and passwords” is enabled. If not, go to the AutoFill pane and enable it.
3. Select “Always AutoFill even for websites that request passwords not be saved”.

Safari will not save or autofill account names and passwords on some websites that request that passwords not be saved. To allow Safari AutoFill on those websites:

Devices using iOS 7.0.3 or later:

1. Tap Settings> Safari> Passwords & Autofill.
2. Turn on Always Allow. You will need to have a passcode lock on your device to enable this feature.

Macs using OS X Mavericks v10.9 or later:

1. Go to Safari > Preferences.
2. Click Passwords.
3. Select “Allow AutoFill even for websites that request passwords not be saved”. Note that you will be required to set a screen lock for your Mac to use this feature.

Devices using iOS 7.0.3 or later:

1. Tap Settings > Safari > Passwords & AutoFill.
2. Turn on Credit Cards.

Macs using OS X Mavericks v10.9 or later:

1. Go to Safari > Preferences.
2. In the AutoFill pane, select Credit cards.

This is expected behavior. Tap the credit card field to then have the option to automatically fill in credit card numbers.

• Devices using iOS 7.0.3 or later: When you tap the credit card field in Safari, you will see the option AutoFill Credit Card above the keyboard.
• Macs using OS X Mavericks v10.9 or later: When you click a credit card field in Safari, you will be asked to choose the credit card that you want to use from your iCloud Keychain.

This is expected behavior. You must manually enter your card's security code, because iCloud Keychain does not store credit card security codes.

If you forgot your iCloud Security Code, you can reset it if you have access to one of your devices that has iCloud Keychain enabled.

• Devices using iOS 7.0.3 or later:
  1. Tap Settings > iCloud > Account > Keychain.
  2. Tap Change Security Code.
  3. Enter your Apple ID password when asked.
  4. Enter a new iCloud Security Code.
• Macs using OS X Mavericks v10.9 or later:
  1. Choose Apple () menu > System Preferences. Click iCloud, then click Account Details.
  2. Click Change Security Code to set a new iCloud Security Code.

If you don't have access to a device with iCloud Keychain enabled, Apple recommends that you wait until you have access to your one of your devices with iCloud Keychain enabled, then follow the above steps to change your security code. If you can't wait until you have access to a device with iCloud Keychain enabled, you can complete setup by resetting iCloud Keychain on the device:

• Devices using iOS 7.0.3 or later:
  1. Tap Settings > iCloud > Keychain.
  2. Tap “Approve with Security Code”.
  3. When asked to enter your iCloud Security Code, tap “Forgot Code?”.
  4. In the next dialog that opens, tap Reset iCloud Keychain. Doing this will replace your iCloud Keychain in the cloud with your iCloud Keychain items on your device.
  5. Tap Reset to confirm. You will be asked to create a new iCloud Security Code.
• Macs using OS X Mavericks v10.9 or later:
  1. Choose Apple () menu > System Preferences. Click iCloud, then select Keychain.
  2. When asked to enter your iCloud Security Code, click “Forgot Code?”.
  3. In the next dialog that opens, click Reset Keychain. Doing this will replace your iCloud Keychain in the cloud with your iCloud Keychain items on your Mac.
  4. Click Reset to confirm. You will be asked to create a new iCloud Security Code.

Contact Apple Support to verify your identity before trying to set up iCloud Keychain on your new device again. After your identity is verified, you will be able to try to enter the correct iCloud Security Code again, or you can use the steps above to change the iCloud Security Code on a device that already has iCloud Keychain enabled.

If you enter the Security Code too many times again, your iCloud Keychain information is removed from iCloud and iCloud Keychain is disabled on all devices. The information remains locally on your devices. If that happens, you can set up iCloud Keychain again with a new iCloud Security Code on the device that has the most current iCloud Keychain information on it. Apple cannot access your iCloud Security Code.

iCloud Keychain items are not part of iCloud Backup. To get iCloud Keychain items on an iOS device that you just restored from an iCloud Backup, enable iCloud Keychain on that device by tapping Settings > iCloud and turning iCloud Keychain on.

If you turned off iCloud Keychain on all your devices, your iCloud Keychain is removed from the cloud. If you also chose to delete the keychain items from your devices when turning off iCloud Keychain, your iCloud Keychain will also be removed from those devices. You will need to set up iCloud Keychain and add items again. Apple can't recover your iCloud Keychain if you turn off iCloud Keychain on all your devices and choose to delete your iCloud Keychain locally on all your devices.

On OS X, if you used Keychain Access to reset your OS X Keychain, OS X will delete your iCloud Keychain items.

Try using Keychain First Aid (under the Keychain Access menu) to verify and repair keychain settings and permissions. If that doesn't help, you will need to set up iCloud Keychain again. If you need to reset your OS X Keychain again, temporarily disable iCloud Keychain in iCloud Preferences before resetting your OS X Keychain.