Unfortunately, AT&T does not officially support Wi-Fi calling on the OnePlus 12. This is common for AT&T with most unlocked, non-AT&T branded phones. Here's why:
* Carrier Policies: AT&T often restricts Wi-Fi calling to devices they directly sell. This is to ensure compatibility and control over their network.
* Technical limitations: OnePlus phones may need specific software configurations to work seamlessly with AT&T's Wi-Fi calling infrastructure.
Possible Workarounds (Not guaranteed):
* Check for updates: OnePlus or AT&T might release an update enabling the feature.
* Root Access: Some users report success after rooting their device but this is a complex process that can void your warranty.
If you need Wi-Fi calling on AT&T, consider:
* AT&T branded phone: Devices purchased directly from AT&T are more likely to support Wi-Fi calling
* Switching Carriers: Some carriers like T-Mobile are more friendly towards unlocked devices enabling Wi-Fi calling
Helpful Resources:
* AT&T Community Forums: Search for discussions specific to your OnePlus model:
https://forums.att.com/
* OnePlus Community Forums:
https://community.oneplus.com/