[NautiNurse]

Verizon, T-Mobile - around a dozen smaller carriers all had issues.

Because they were contacting AT&T customers.

[cableguymn]

or the small carrier was re-selling AT&T’s network.

[pfflier]

Verizon, T-Mobile - around a dozen smaller carriers all had issues.

Because they were contacting AT&T customers.

Thank you for posting that. I remember reading that in yesterday's thread.

[Andy from Chapel Hill]

And, some of them resell AT&T minutes.
And, AT&T owns discount sellers like Cricket.

I guess you would have to have network analyzer to figure out which network you were really talking through...

[EEGator]

Correct.