You might try and take the issue on yourself by posting a detailed (and friendly) post in the other carrier's community forums. You may get some interesting responses. Look here (links below) and pick the forum within each community which you think will answer your questions:
To update: I've now figured out since November 21 I haven't received any texts from Verizon or T-Mobile. I have worked with Robotaholic here, numerous customer service people on the phone. I even emailed Jerry Adriano, Vice President of Customer Experience. He put me in touch with a member of the Executive & Regulatory Services department. After all of that all I'm getting is "This isn't a Sprint issue." For some reason no one at Sprint is willing or able to contact a peer at either of those other mobile providers. They suggested I have a friend on each service call their customer service. Here's how that goes: Call, reach low level tech support who then says they don't see the issue and that it's a Sprint problem. I'm not asking friends to spend a week or two, at least an hour a day, trying to fix what I too see as a Sprint issue.
This texting problem is bigger than a quick call to customer service. It is technical and requires someone with the right expertise and understanding. I cannot beleive that I'm actually here begging someone to either call a tech at Verizon or T Mobile, or to please let me out of my contract and refund me for the phone and set-up fees so I can go elsewhere. Anyone with any advice?
I just private messaged you too. Iam having very similar issues. I sent a text to two friends with verizon iphones and neither of them got it around 5:30pm today. Yet my wife with a basic verizon phone can text me fine.
I apologize that this has been happening. I would be very frustrated. If you will private message me your phone number, I can verify that your sms routing on your account is correct. I can also do some other steps to get it working.
Hey all! Anyone that can help? I can send texts to everyone, and I have been receiving texts from people on T-Mobile, AT&T, and Sprint. Lately thought, I've had delays even in iMessages and duplicate messages and messages being recieved out-of-order on the other end. I can send to Verizon, but any of my many friends on Verizon cannot text me back. I never receive it. Sprint just tells me to cycle down and restore the network. IT HAS to be something on my account. My other friends on Sprint have no problem texting Verizon phones. Also, I took the phone to the Genius Bar at the Apple Store and they replaced it earlier when I was having texting issues. I wasn't able to receive texts from anyone at that time unless they were on Sprint or using iMessage. It didn't fix anything. Finally a Sprint representative told me to give it 48 hours and it would work. Shockingly it did. But now as of this past Monday, it's happening again. Anyone??