Why doesn't video telephony work?

Why is it always not possible to make a video call to this number?
When we had two older phones it still worked

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@priskahue*** @wrote
Why is it always not possible to make a video call to this number?
When we had two older phones it still worked


What kind of older mobile devices were they and what kind of mobile devices are available now?

In any case, the appropriate app must be available for video telephony!

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Installationen, Netzwerk, Internet, Computertechnik, OS Windows, Apple und Linux.

We used to make calls with Samsung Galaxy S3 and S5
Now with Samsung Galaxy S7edge and S6 edge.

When making normal calls, it has the camera function on all cell phones

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@priskahue wrote:
We used to make calls with Samsung Galaxy S3 and S5
Now with Samsung Galaxy S7edge and S6 edge.

When making normal calls, it has the camera function on all cell phones


Are these requirements below met?

The two requirements for this type of sound and image exchange are that both conversation partners are in an area covered by 3G/UMTS and that both the calling person and the person being called have a cell phone with a video telephony function. Individual manufacturers such as Samsung integrate the “video telephony” function into their devices as one of the standardized telephone functions. For video telephony over the 3G/UMTS network, the same call costs apply as for telephony.

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Installationen, Netzwerk, Internet, Computertechnik, OS Windows, Apple und Linux.

Yes, in my opinion they are fulfilled. We both set automatic search in the network settings 4g/3g.
I don’t know where else I can change anything.
It shows me volte at the top of the status bar. And with my mother too.

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