Merge pull request #86397 from JarrettRenshaw/patch-28

Update concept-authentication-phone-options.md

Author: ktoliver

articles/active-directory/authentication/concept-authentication-phone-options.md

@@ -76,6 +76,9 @@ If you have problems with phone authentication for Azure AD, review the followin
    * Have the user change methods or activate SMS on the device.
 * Faulty telecom providers such as no phone input detected, missing DTMF tones issues, blocked caller ID on multiple devices, or blocked SMS across multiple devices.
    * Microsoft uses multiple telecom providers to route phone calls and SMS messages for authentication. If you see any of the above issues, have a user attempt to use the method at least five times within 5 minutes and have that user's information available when contacting Microsoft support.
+*  Poor signal quality.
+   * Have the user attempt to log in using a wi-fi connection by installing the Microsoft Authenticator app.
+   * Or, use SMS authentication instead of phone (voice) authentication.
 
 ## Next steps