Wifi calling, what it is and how the technology works to call even where there is no signal

The wifi callingor VoWIFI (Voice over WiFi), is an alternative to traditional calls for situations in which our mobile phone is in an area not covered by cellular mobile service, so when “there is no reception”. The wifi calling mode allows you to exploit the network Internet through wireless access to make voice calls when we are in areas where there is no telephone signal Not And available.

How wifi calling works

Thanks to the internet connection that reaches our homes it is possible to send the data packets on which our voice “travels” towards the cellular network, as if we were in an area regularly covered by the telephone signal. In this way, the means through which the call is sent to the cellular network changes but in the end the result is the same.

For users nothing changes: the called party’s mobile phone will ring normally and the call will follow the same path as the one otherwise made under conditions normal of operation. This is possible because the various base radio stations that make up the cellular network are connected to each other through digital channels: whether it is via cellular radio signal or via wifi, it is only a question of which half Of communication will be used to send the information.

Wifi calling is not the definitive solution for having network coverage in every place or at all times. We must first of all be under coverage Wifi (hence the name wifi calling) but, above all, it is necessary that the mobile telephone service (in other words the SIM card) and the provider to which the wifi refers belong to the same operator telephone (and that too supports service). Last aspect the mobile phone: needs to to support the modality VoWIFI.

The difference with the services offered by messaging apps

At this point, it would be legitimate to ask: but doesn’t this whole process already happen using the services made available by messaging platforms such as Whatsapp or Telegram. In practice, judging the final result, it is effectively the same: we speak normally with our interlocutor. The difference between wifi calling and social platform calling services is that in the first case there is no need to sign up for third-party services or install applications: Our conversations do not pass through applications and their servers. This, ultimately, can be translated as easier use and better performance.


Advantages and disadvantages of wifi calling

Like everything, especially related to technological matters, this call routing service brings with it advantages And disadvantages. From the user’s point of view, wifi calling can represent a useful resource for those cases in which, not being able to have cellular coverage (for various reasons) it is still possible to count on the network Internet. In fact we will have a channel available redundant on which you can do trust and allow us to make calls in all circumstances.

On the other hand, this technology requires that the wifi signal is available and that both the mobile operator and the internet provider are the same, in addition to the fact that the mobile phone must support the VoWIFI mode: this means, in short, that only the More recent smartphones will be able to count on this technology, in addition to the fact that it is not yet supported by all telephone operators. In this regard, both Apple and Google have published on their support pages how to activate calls on WiFi networks. These aspects, ultimately, could therefore translate into more costs for the user.