iPhone 13 Pro Max SMS Issue. Cant receive second authentication via text

SOLUTION FOUND FOR 3rd PARTY VERIFICATION CODES ISSUE

ASK AT&T 2nd Tier CSR to check “SEND EMAILS AS TEXT MESSAGES” to allow the 3rd party messages to come into yr phone

Detailed Response placed on AT&T discussion forum

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I am so appalled to read what people like me have been going thru & I thought it was just me! That’s because that’s what the morons at AT&T (& it seems Verizon too) have been making us believe! 

Dear@HarpyEagle this has nothing to do with yr SIM card ! At all!!! There is no defect with apple phone or the android phone on which my husband had the same problem. 

and what’s worse… it is pathetic that people working for AT&T (granted the goodness of their hearts to try to help) get online here and give wrong suggestions like “let’s see, u probably have yr settings wrong!” … ITS ALL NONSENSE! 

Please see my post below that I just put on a similar ATT user forum….

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So, after harrowing hours spent with AT&T Customer Service, we went into a store to get this exact same issue resolved and here’s the actual REAL resolution after insisting with a LEVEL 2 TECHNICAL SUPPORT representative that he tell us exactly what he changed at his end to make this work when 5 people and 3 hours (of course, ANY customer service coming from the Philippines is basically worthless in any scenario, not just AT&T) had left unresolved. And the solution is as follows:

1. For Android phones, the problem does get resolved at times by ‘reset network settings’. This however doesn’t happen on an iPhone.

2. For iPhones - & if android doesn’t respond to the above reset - you need to call AT&T LEVEL 2 Customer Service & ask the technician to UNCHECK the setting ‘Send emails as text messages’. “SEND EMAILS AS TEXT MESSAGES”

Sounds absurd right? Because technically this should be a setting called ALLOW EMAILS TO BE SENT AS TEXT MESSAGES. Anyways…

Supposedly, the text messages for verification codes emanate from most sources in an email format (as we received emails from Ring or from the bank for 2 step verification). This email now simultaneously gets sent to yr phone no as a text message. If ur a/c settings in core AT&T system is set to block this, you won’t receive a verification code. The setting is NOT AVAILABLE on local phone settings, only on the main servers/ configuration. 

1st level support either doesn’t know this or doesn’t have access to this setting (don’t ask why? It’s AT&T! Common sense questions are not allowed.. lol)

So the only way is to call 2nd tier CSR. I hope this helps resolve a 1000 phone calls a month!!!

(edited)