A French mobile network observer, @KoshoNSA, reported on September 25 at 11:30 that the VoNR SOS function had briefly worked with Free, one of France’s major mobile operators. VoNR SOS is a feature that allows emergency calls—such as those to numbers 15, 17, 18, and 112—to be routed directly over standalone 5G networks, without switching to older 4G technology. This is considered "true 5G" because it operates independently of the 4G network infrastructure. Previously, when Free launched its nationwide VoNR service in September 2024, emergency calls were automatically switched to VoLTE, a voice-over-4G technology. This meant that users would temporarily leave the 5G network to reach emergency services. Activating VoNR SOS would eliminate this switch, keeping the call entirely on 5G. This is significant because, in areas with only standalone 5G coverage, switching back to 4G could delay or even prevent the call from connecting, as 4G might not be available. This kind of deployment is not new. In Spain, Telefónica successfully completed a nationwide VoNR rollout by the end of 2025, covering over 5,700 municipalities without reverting to 4G. If the observation by @KoshoNSA is confirmed, Free would be among the first in France to implement a similar system for emergency calls. However, several questions remain. It is unclear which devices are affected, in which regions, or under what conditions the VoNR SOS function is activated. The presence of the "5G+" logo on a smartphone does not necessarily confirm that the call will use VoNR. Free Mobile has not yet provided any official information, and the observation is based on a single data point, leaving much to be determined.