Editing Openai/689d5536-2710-8008-9dd0-96de4530ae04 (section)

=== Assistant: Got it — that’s actually an even stronger sign this isn’t a dirty-SIM issue anymore and is more likely an AT&T VoLTE re… ===
Got it — that’s actually an even stronger sign this isn’t a dirty-SIM issue anymore and is more likely an AT&T VoLTE registration / provisioning problem.

Here’s why your test points that direction:
* With Wi-Fi Calling off, calls fail instantly — that means the phone never even gets a “ring” signal from the network.
* With Wi-Fi Calling on, calls sometimes connect, but the voice drops after 1 second — that’s classic for a mismatch between what your phone is trying (VoLTE or Wi-Fi) and what AT&T thinks your line supports.
* SMS still working means your SIM is still recognized by the network, so it’s not completely dead.

==== 1. Contact AT&T support (phone or in-store) and ask them to: - “Check and refresh VoLTE provisioning on my line.” - “Re-register my SIM for IMS services (voice over LTE, SMS, and Wi-Fi calling).” - “Push a network profile update to my device.” These are all things they can do remotely. Sometimes they’ll call it “rebuilding the line” or “resetting features.” ====
# Mention that: - Calls fail instantly when VoLTE is used. - Wi-Fi Calling connects briefly then drops after a second. - SMS and data are fine. - You’ve already reseated the SIM and reset network settings.
# If they resist: - Tell them this started ~a month ago, possibly after an account or network update. - Ask for Tier 2 or “advanced technical support” — they have access to the IMS/VoLTE provisioning flags.
# If provisioning refresh doesn’t help: - Try a brand-new SIM from AT&T (free at most stores). That forces the network to rebuild your profile from scratch. - If the new SIM in your iPhone still fails but works fine in another phone, then it’s an iPhone hardware or iOS issue.

If you want, I can give you a ready-to-read one-paragraph “tech support script” that should get AT&T to skip the basic “turn it off and on” stuff and go straight to fixing the VoLTE profile.
Do you want me to write that out for you?