iPhone Yahoo Connection to Server Failed

Solution: 1

Check whether you have a standard Internet connection on your iPhone.
Also, check if the cellular data has been turned off.
The Internet connection failure is also a reason for the server error on your Yahoo mail.
If the problem persists even when everything seems to be fine, restart your iPhone as a primary step to fix the issue.

On your iPhone, go to the Settings window and tap Accounts & Passwords.
Choose your Yahoo account and tap the Delete Account button at the bottom of the window to remove your account.
Now, re-add your Yahoo account by configuring the server settings manually.
So, you need to select the Accounts & Passwords menu again.
Tap the Add Account button and choose Other from the list of available email service providers.
Make sure not to select the Yahoo Mail option from the list of email service providers.
If you choose that, then it will automatically configure the server settings to fix the issue iPhone Yahoo connection to server failed.
Next, enter your Yahoo email address and password in the required fields.
Configure the incoming and outgoing mail server for the Yahoo Mail and verify your account.
After completing the verification, check if you can access the Yahoo Mail on your iPhone.

If you aren’t able to open the Yahoo Mail on your Mail app due to the server connection error, try to change your Yahoo Mail password.

Open the default browser on your iPhone and go to the Yahoo Sign-in page.

Next, change the created password and check if you can access your Yahoo Mail account from the Mail app.

Also, check if the “Connection to the server failed” error is resolved.

If the problem iPhone Yahoo connection to server failed error is persists, reset the network settings and restart your iPhone.