If you have been a regular user of the Yahoo Mail Service, you would have come across an error that states that the network connection has failed, especially when the service is opened through its mobile application. Yahoo also has a security backup for this kind of error with the sole aim of keeping the user information private. If you are unable to fix the problem yourself, you can refer to the steps mentioned here and make sure to follow each of them consistently. Else, you can also Contact Yahoo Support Team to pitch in your issue and the expert technicians there will solve the issue in no time, no matter the nature of it.
Do ensure to keep your phone updated with the latest iOS version. The error arises also due to an older version still running on the phone. After the update, add the Yahoo Mail Service app once again to the system.
Again, do ensure that the Android software present in the device is updated to its latest version as the errors may also arise because of an older version of the OS
These steps must be sufficient to solve the issue associated with the Yahoo Mail Service. If you still face any issues with implementing the same, you can call to Yahoo Mail Customer Service Number to have your issue resolved in no time! Until then, happy mailing!