Fairphone 6 Incoming Caller ID Display Issues

To confirm this symptom, verify that the device is actively using a 4G/LTE signal for voice calls. When an incoming call occurs while '4G Calling' is enabled, observe the caller identity field on the screen. If the display consistently shows 'Unknown' for all incoming calls, regardless of whether the caller is saved in the local contact list, the device is failing to parse or display the incoming Caller ID headers during an active VoLTE session.

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