VoWiFi standing for Voice Over WiFi is a method of transmission of voice with the help of WiFi network. It is greatly preferred over conventional cellular calling because of its independency on network signals.
Consider yourself in a basement, trying to do an urgent call and walking here and there to make your device catch signals. Frustrating, isn't it? The problem behind this is the weakening of frequencies, which are used in connecting our calls while penetrating through the walls. And when you are in a basement this problem further increases.
This leads to another big problem of exposure of the human body to electromagnetic waves which are measured by SAR Values. In short greater the SAR value of a device greater is its tendency to search for signals in a low network area, making our body more exposed to EM Waves. Samsung is the company offering the lowest SAR values in its device but the problem persists.
The other problem with cellular network calls is being faced by people travelling abroad frequently. You might not have an international telephone line. Also, the top-ups for international calls, provided by your telecom carrier are not at all budget-friendly.
Since modern problems require modern solutions, this is where VoWiFi comes into play.
VoWiFi is the transmission of voice over a WiFi network. It is a free service used to connect to any network provider without the use of a cellular network. Not only for calls, but it can also be used to send SMS and images to any person.
It seamlessly switches between cellular and WiFi network to provide uninterrupted connection. That means if your network signals are weak it will switch to WiFi network and vice versa.
The technology, as of now, has proven to be the best solution to the problems with cellular calling. Now you don't have to search for signals in a basement. All you need is just a WiFi and a smartphone, supporting VoWiFi.
For people travelling abroad, you can use the WiFi connection of Hotel, Airport, Home or Office to take advantage of this technology.
Telecom providers like Airtel and Jio are working continuously to promote the service in India to ensure better quality than conventional calling with cellular networks.
Update your device to the latest firmware.
Ensure the network connection is selected to VoLTE.
Go to Settings > Connections > WiFi Calling > SIM1 or SIM2 > Switch on WiFi Calling.
Connect to any WiFi and call normally as you used to do it before.
VoWiFi service, from now on will work automatically on any call.
No. There are no additional charges at all. The service is included in your daily pack itself.
No. It is not necessary that all smartphones support VoWiFi. You can check for it by going to the connection settings on your Samsung phone.
Yes, but as of now, VoWiFi supported devices can vary with different telecom providers. Samsung VoWiFi supported device list is mentioned below the post.
Usually depends on your WiFi speed. With decent speed WiFi, the quality will be better or at least equal to cellular network calling. More speed implies more enhanced quality.
Yes. By switching to VoLTE you get an uninterrupted connection because of the fact of its seamless switching between Mobile Network and WiFi Network depending on conditions.
No. You can connect to any WiFi to enjoy VoWiFi service, only taking Airtel and Jio in consideration.
The basic difference is VoWiFi does not require any 3rd party app. Also, VoWiFi provides better quality and consumes less data than other Apps.
PS: Currently Jio offers greater VoWiFi support as compared to Airtel. If your device does support WiFi calling but you aren't able to use it, then, in that case, you can contact your telecom provider and post a request to add your respective device in the list.