SMS over WiFi issues continue

Hello @iPhoneyBologna,

We'd be more than happy to take a closer look into why you're experiencing this issue with receiving SMS and MMS text messages.

Would you kindly provide us with the zip code for the areas where this usually occurs, so that we can investigate this further?

Also, because you mentioned that there may be poor coverage in those areas, as well as access to a strong Wi-Fi connection, we recommend that you Stay connected with Wi-Fi Calling by following the steps at the link provided.

We hope this helps and look forward to hearing back from you soon!

Sean, AT&T Community Specialist

11790 and 11738 are the primary areas I’m in. To be clear, I AM using WiFi calling and confirm I see ATT WiFi on my phone to confirm I’m connected and also confirm a strong WiFi connection with Speedtest. That’s where I get the dl/ul stats from. I’m not sure how to state it any clearer, my problem is SMS, MMS as well as group messages are unreliable over WiFi. I either don’t get the messages someone said they sent, or I receive a dump of messages at the end of the day when I’m connected to a cell signal. When I attempt to send messages over WiFi I get the dreaded green line at the top of iMessage as it’s attempting to send the messages. Moments later I get notification that the messages failed to send. Blue iMessages work fine. 

so really, my question to ATT is “what’s broken with SMS over WiFi on your network?” Is it my phone number? Is it my account? 

Same issue here. Exactly same issue. I live in an area where there is no cell service, so I rely on wifi calling for sms/mms. I never receive ALL messages, only some. Once I get back into cell service, then the texts and MMS come through. Again I can receive sms and mms using wifi calling, but not all come through.

I've tried all sorts of things, opened multiple tickets with at&t, got new sim cards, but still at&t fails to resolve this issue. 

Also, I have a samsung galaxy note 20 ultra 5g

@ATTHelp don't act completely oblivious as to this issue. You really need to go back and talk to your colleagues about the fact that this service is extremely spotty. Don't post a link to some how to guide when this is not a how to issue. It's a bug in your wifi calling feature of your phones. Figure it out!

Thanks for your response Aplasser. Did you ever get a new phone number? I’m just curious because I remember coming across one post that mentioned that but I find that hard to believe to be the fix. I’ve also been told the past few days that some calls haven’t gone through. I’ll have to test that with my work phone on another carrier to attempt to learn if that fails when messaging is failing too. If that’s the case then you may be on to something about it being an issue with the WiFi calling feature all together and not just sms 

I'm adding more here so it could possibly help someone in the future. I still have this problem. Yesterday I was informed I missed a few important phone calls. Not receiving texts, and I could confirm my phone showed AT&T Wi-Fi. I tried calling myself from my desk phone and sure enough, it rang and went to voicemail without my phone ever actually ringing on the receiving end. I also could not receive any authenticating MFA texts to accounts that rely on that security. I got on the chat with AT&T support where the usual Wi-Fi calling feature is reset and I have to reboot the phone. It worked for a while and sure enough, its not working again today. 

So what important here that I learned is its NOT just SMS/MMS, this problem also affects phone calls as well. This is obviously an issue with the way AT&T handles Wi-Fi Calling. This issue is such a problem for me I think I need to consider other providers.

A major competitor won the corporate contract for my organization and they built out an internal network of repeaters so I actually have a full signal at my desk. Also fortunately, when at home I have no Wi-Fi Calling issues with my work cell. 

I'll come back here and continue to update with anything new

What I'm noticing is that when I'm having WiFi Calling issues, any SMS messages that were sent to me during that time are not received until I connect to a cell tower again. Even if I reset my phone and get Wifi calling working for the time being, I NEVER get those messages waiting to be received even though I get other new messages. It's almost as if there is a SMS queue somewhere that doesn't "care" about WiFi Calling but releases those SMS once my cell is connected to an ATT tower. 

So yeah, this seems to be the exact behavior you were describing Aplasser.

*bump*. Exact same issue here and it's been happening as far back as I can remember. Anyone have any positive troubleshooting with AT&T support about this?  Everything mentioned above is exactly the same.  I am in a big masonry/metal building with very little to zero cell service in the downtown area of a major metropolitan area.  WiFi Calling is on 24/7 and verified active.  When I get the message fail indicator, I walk over to a window and after one or two bars of cell connection, it sends.  

Does turning on airplane mode resolve this issue? I’ve found that I can get outgoing mms working again by turning on airplane mode while connected to WiFi.