My iPhone “Cannot Verify Server Identity”! Here’s The Real Fix.

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You want to send an email to your friend, but you’re receiving a strange notification. The pop-up says that the Mail app cannot verify the identity of the mail server you’re trying to connect to. In this article, I’ll explain why your iPhone “cannot verify server identity” and show you how to fix this problem for good!

What To Do When Your iPhone “Cannot Verify Server Identity”

  1. Restart Your iPhone

    If you receive an alert saying that your iPhone “cannot verify server identity”, the first thing to do is restart your iPhone. This simple step can occasionally fix a minor software glitch that could be causing this error.

    To restart your iPhone, press and hold the power button until you see slide to power off appear near the top of your iPhone’s display. Use a finger to swipe the red power icon from left to right to turn off your iPhone.

    Wait around a minute, then press and hold the power button again to turn it back on. You can release the button once the Apple logo appears at the center of the display on your iPhone.

  2. Close The Mail App, Then Reopen It

    When the mail app isn’t working properly, try closing out of the app and reopening it. This can occasionally resolve minor problems if the app’s software crashed while you were using it.

    To close out of the Mail app, double-click the Home button, which will open up the App Switcher. Use a finger to swipe up on the Mail app until it no longer appears in the App Switcher.

    close out of mail app

  3. Delete Your Email Account, Then Add The Email Account Again

    Deleting and reentering your email account information resets your email’s server identity certificates, which allow your email account to be verified by the Mail app.  Don’t worry — deleting an email account on your iPhone will not delete your actual email account.

    To delete an email account on your iPhone, open the Settings app and tap Accounts & Passwords. Then, under Accounts, look for the email account you want to delete and tap it. Finally, tap the red Delete Account button at the bottom of the screen, then tap Delete Account again when the confirmation alert appears on your iPhone’s display.

    delete mail account on iphone

    Next, reenter the account information by opening the Settings app and tapping Accounts & Passwords -> Add Account. Then, select your mail service and enter the information.

    set up your email account again

  4. Reset All Settings

    When you reset all settings, all of the data from the Settings app on your iPhone will be erased. Software issues can be difficult to track down, so we’ll reset all settings to make sure we erase the problem.

    To reset all settings, open up the Settings app, then tap General -> Reset -> Reset All Settings. If you have a passcode or a Restrictions passcode, you’ll be prompted to enter them. Once you do, tap Reset All Settings when the confirmation alert appears at the bottom of your iPhone’s display.

    reset all settings on iPhone in settings app

You’ve Got Mail!

The Mail app on your iPhone is working again and you can start sending and receiving all of your important emails. Next time your iPhone “cannot verify server identity”, you’ll know exactly what to do! Don’t forget to share this article on social media, and feel free to leave us a comment down below if you have any other questions!

Thanks for reading,
David L.

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About Author

David Lynch

Hi, I'm David. I am a writer and editor. I enjoy creating content that helps readers learn information that will benefit them in their daily lives.