Wi-Fi Calling is supposed to help you make clear calls even when cellular signal is weak. When it stops working on the OnePlus 15, calls may fail, drop suddenly, or switch back to mobile signal without warning. This issue is usually caused by settings, network restrictions, or carrier requirements, and most fixes are straightforward once you know where to look.
Why Wi-Fi Calling Isn’t Working on OnePlus 15
- Wi-Fi Calling is turned off in system settings.
- Your carrier does not support Wi-Fi Calling on your plan.
- Emergency address information is missing or outdated.
- Weak or unstable Wi-Fi connection.
- Network or phone app glitches after a system update.
Enable Wi-Fi Calling in Settings
Wi-Fi Calling must be manually enabled, even if your carrier supports it. If the option is off, your phone will rely only on mobile signal for calls.
Open Settings, and then tap Mobile network.
Tap Wi-Fi Calling, and then toggle it on.
Confirm Carrier Support
Not all carriers support Wi-Fi Calling on every plan or region. If your carrier does not allow it, the feature may appear but never activate.
Open Settings, and then tap Mobile network.
Tap SIM settings, and check if Wi-Fi Calling shows as supported.
Add or Update Emergency Address
Wi-Fi Calling requires a registered emergency address for emergency services. If this information is missing, the feature may silently stop working.
Open Settings, and then tap Mobile network.
Tap Wi-Fi Calling, and then add or update your emergency address.
Check Your Wi-Fi Connection
Wi-Fi Calling depends on a stable internet connection. Slow or unstable Wi-Fi can prevent calls from connecting properly.
Open Settings, and then tap Wi-Fi.
Tap your connected network, and make sure the signal strength is strong and stable.
Restart Network Connections
Refreshing network services clears temporary glitches that affect calling features. This often restores Wi-Fi Calling immediately.
Open Settings, and then tap System settings.
Tap Restart, and allow the phone to reboot fully.
Update the Phone App
An outdated or corrupted Phone app can prevent Wi-Fi Calling from registering correctly. Keeping it updated ensures compatibility with network features.
Open the Play Store, and then search for Phone by OnePlus.
Tap Update if an update is available.
Wi-Fi Calling issues on the OnePlus 15 are rarely permanent. Once the feature is enabled correctly and your carrier requirements are met, calls should route through Wi-Fi without problems, even in areas with weak signal.
FAQs
Does Wi-Fi Calling work without a SIM card on OnePlus 15?
No. Wi-Fi Calling still requires an active SIM card and a supported carrier plan, even though calls use Wi-Fi.
Why does Wi-Fi Calling turn itself off?
This can happen if your Wi-Fi connection becomes unstable or if the carrier temporarily disables the feature. Reconnecting to Wi-Fi usually fixes it.
Is Wi-Fi Calling free to use?
Most carriers do not charge extra for Wi-Fi Calling, but call rates depend on your plan and whether you are calling local or international numbers.
