Why does the sound quality vary on Allô?
Allô uses VoIP technology (Voice over Internet Protocol), which means that your calls are transmitted over your internet connection rather than traditional phone lines.
Because of that, the quality of the sound during a call depends on the stability and speed of your internet. If your Wi-Fi or mobile data connection is weak, you may experience lags, distortion, or interruptions.
What can affect call quality?
Here are the most common causes of poor sound quality:
Unstable Wi-Fi (frequent disconnections or weak signal)
Mobile data with low bandwidth or coverage
Heavy usage of your network (e.g. downloading large files during a call)
Using a VPN or a restrictive network (like public Wi-Fi with firewalls)
How to improve your call quality:
Use a stable and fast internet connection, preferably Wi-Fi or 4G/5G with good signal strength
Close apps or tabs that consume bandwidth during your call
Try disabling VPNs or switching to a different network
Allô also automatically adjusts call quality in real-time to adapt to your network conditions, but a good connection is still essential for clear, uninterrupted calls.