You can use kintone on iOS Safari or the mobile app even if your domain uses Client Certificate Authentication.
To access a domain that is using Client Certificate Authentication, you need to install a client certificate.

To use kintone on Safari, you need to configure the following settings.

1. Access kintone from a PC, click the Account Menu icon (the down arrow) at the top right of kintone, then click Account Settings. 　

2. On the "Account Settings" screen, click Mobile Access.
   

3. Take a note of the password displayed in the Client Certificate section. You will use it in a later step.

4. Click Access via Web Browser.
   

5. Enter an e-mail address that can receive e-mails on the iOS device on which you want to use the kintone mobile view. Re-enter the e-mail address for confirmation. Click Send.
   The settings file is sent to the e-mail address you entered. Receive the e-mail with the standard iOS e-mail app.

6. On your iOS device, you will receive an e-mail with the client certificate attached. Tap the certificate.

7. Enter the password for the client certificate, which you took a note of in Step 3.

8. Tap the access URL provided in the e-mail to access kintone on Safari.

If you want to use the mobile app, you need to configure settings in the following way.

If you want to use the mobile app, download kintone on your iOS device.

For details on mobile devices that can be used with the mobile app, refer to Supported Operating Environments (only available in Japanese).

1. Access kintone from a PC, click the Open the Account Settings icon (the down arrow at the top right of kintone), then click Account Settings.
   

2. On the "Account Settings" screen, click the Mobile Access tab.
   

3. Take a note of the password displayed in the Client Certificate section. You will use it in a later step.

4. Click Access via iPhone or Android App.
   

5. In the 2. Select the app to use section, select "kintone Mobile."

6. Enter an e-mail address that can receive e-mails on your iOS device on which you want to use the mobile app. Then re-enter the e-mail address for confirmation, and click Send.
   The settings file is sent to the e-mail address you entered. Receive the e-mail with the standard iPhone e-mail app.

7. On your iOS device, open the e-mail that you sent from your PC.

8. Tap the attached file.

9. Select Copy to kintone as the app to open the file.

10. On the client certificate password entry screen, enter the password that you took down in Step 3, then tap Next.
    

11. On the login screen, enter your kintone login password and tap Login.
    

12. If you are prompted to allow the app to send notifications, allow or disallow as needed.

Now the connection setting is completed. The mobile app screen opens.