
With the Voys app, you make calls through your smartphone's internet connection, either via 4G/5G or WiFi.

The network
With the Voys app, you make calls through your smartphone's internet connection, either via 4G/5G or WiFi. Calling via 4G/5G is strongly preferred for the best call quality, as WiFi is often simply less reliable.
Calling via WiFi
This might sound a bit odd, as many people are used to the idea that WiFi is faster and more reliable. For watching videos, downloading photos, and similar activities, this is true. However, a phone call is different because it requires a direct connection.
When your smartphone is connected to a WiFi network, the app automatically uses it. In most cases, this works fine, but sometimes it can cause call quality issues. With a WiFi connection, calls are more likely to stutter, experience lag, or lose connection entirely. The app can't do anything about this, but you can switch to 4G/5G.
This can also happen even if you have a very fast and well-functioning WiFi network.
Turn off WiFi
We therefore recommend using the app with 4G/5G. If you notice that your call quality is poor, turn off your WiFi connection. The call will automatically switch to 4G. You can do this during the call on both Android and iOS phones.
We understand that some customers lose audio when switching from WiFi to 4G/5G and vice versa. If this happens, turn on remote logging and use the feedback button in the app as explained below. This allows us to investigate the cause of the issue.