I got my Zenfone 10 (512 GB, US version) a few weeks ago. I swapped my AT&T SIM from a Samsung S10e into it and it's been working perfectly all this time, 5G and all.
Last night I received the Android 14 update. As soon as the phone rebooted, any time the phone connects to AT&T, it works for one or two minutes. Then it disconnects with a notification that my provider has temporarily disabled voice, and same message for data.
I eventually realized turning off 5G service in the SIM data settings allows voice and data to remain connected.
I called AT&T. They said the phone is whitelisted and everything looks okay on their end. They tried pushing a reprovision. That seemed to work, but it only lasted about half an hour before the same problem started. In the first call, AT&T said a new SIM (5G) might help, however my SIM is only 3 months old so they do not think this is a problem. They suggested if there's any further trouble, I contact ASUS.
I'll request the new SIM. But in the meantime, it's suspicious that as soon as my phone rebooted with Android 14 update, it kept getting kicked off of AT&T 5G. Is there some issue with the update?
Edit to add: If I'm somewhere with a very, very strong AT&T 5G signal, it stays connected with 5G enabled and no problems.
