@FlySmurf

If there is Swisscom software at sammobile.com, it will most likely work with it, or conversely, if there is no such software, it will most likely not work. That’s the generic answer. With Android devices, Swisscom (currently) has the general restriction that prioritization of WiFi calling is not possible. Even the worst cell phone reception causes the device to switch to cell phone priority. Only iPhones remain on WiFi calling with reception < 3 points.

@feealf Thanks for your answer.

I can’t confirm that. A normal Galaxy S7 Edge (not Swisscombrandet) works. Just not the dual SIM version

Greeting

@FlySmurf

The DUOS variants have a different model number and therefore it is not necessarily possible to draw conclusions from one model to the other. It is true that after a long, long time, Swisscom has released the free models of the Galaxy 7 series. Let’s hope that this heralds the long-overdue new era and stays that way in the long term (other models were only capable of Wi-Fi calling temporarily or until an update).

You can install the Swisscom firmware on the Duos, but you can only change the CSC file to SWC with root; for me it always came from Vodafon.

The device works perfectly, but as I already wrote, I don’t know whether WifiCalling works properly or not. But I don’t care at the moment, I have a great device with two SIM cards.

Hello everyone,

I have another problem. Since last week I have had VOLTE and WifiCalling activated on my Samsung Galaxy S7 (not branded by Swisscom). I have a personal cell phone and a business cell phone. Every weekend I forward calls from your business cell phone to your private one and vice versa during the week. On Friday I wanted to deactivate call forwarding again on the private device that Volte received. However, I always get the error message: Unable to read data. Network or SIM card error. It worked without any problems on the other cell phone without Volte. Called the hotline after trying to remove the diversion for 45 minutes. The hotline then removed your call forwarding and said: We have a lot of problems with VoLTE. Just keep trying. Have any of you already tried call forwarding? Does it work for you or is this a general problem, which of course would be stupid. Thank you very much for your feedback.

Is VoLTE and WifiCalling also possible with a light subscription (S or XS light)?

Google is not “my friend” on this topic. Swisscom online Help writes: Contact a Swisscom shop. The Swisscom shop employee says: “I have to go”. So I switched from prepaid to a subscription in the shop and now I still don’t have the functions. What now? Is there an exact answer to this?

and

I recently contacted Swisscom’s online advice service with this question as to whether VoLTE is also available for the S subscription. I received the following answer: If your phone supports it, yes.

Regarding VoLTE/WifiCalling with light subscriptions: I sent “START VOLTE” to 444. Back came: The use of VoLTE is not possible with this subscription. We would be happy to advise you in the Swisscom Shop (www.swisscom.ch/shops).

It is not possible to use VoLTE with this subscription. We would be happy to advise you in our Swisscom Shop (www.swisscom.ch/shops).

Dear Swisscom, I came from the shop and that’s why I switched to the subscription…

In between, WifiCalling no longer worked on another device (iPhone SE) after switching from an entry subscription to an S light subscription (it worked before).

What do I do now? Since I have poor reception in my house, WifiCalling was a reason for me to switch. Now I have higher costs and no additional function…

So, does anyone have WifiCalling on a light subscription?

Can a Swisscom employee advise me on my next steps? And no, I don’t plan on switching to a more expensive subscription…

@SamuelD I should have taken note of your post, there is nothing about light and on the referenced website. Advanced Calling…

@Alex75 I have the same problem. Since VoLTE was activated for me, I can no longer switch redirections on or off. I always get an error message. Video telephony has also stopped working since then. Neither incoming nor outgoing.

We tested it again with Open Market devices. We couldn’t find anything. Samsung also took another look at it.

But since nothing is impossible and not all tests always show every error and of course I believe you, here is a workaround. Please deactivate Volte/Wifi calling in the settings. Then it should work safely and then you can activate Volte/Wifi calling again.

Hello everyone, thank you very much for your answers. GuidoT, I had this idea too and turned off Volte and WifiCalling. But it still didn’t work. I’ll be abroad until tomorrow evening and will try again and let you know here. The others who have the same problem. Did the workaround work for you?
Thank you very much for the support.

Hello Guido T, I’m back again. I have now tested the workaround. I turned off WiFi calling and Volte. Unfortunately it didn’t help. I then turned off WiFi and tried again. Also same error. I think this certainly happens to some people, but of course not everyone needs the function. That’s why not everyone noticed. With my other cell phone where Volte has not been updated it still works without any problems. How about the others? Other suggested solutions?

I immediately had this idea to turn off VoLTE when I realized that I could no longer turn redirects on and off. I forgot to mention it in my last post. Still doesn’t work for me either. Video calling doesn’t work either, even though the cell phone switches to 3G.

OK. The technology should look at it again, since it worked for us.

@everyone, on the subject of call forwarding

As already posted by others, call forwarding cannot be activated via the phone settings (if WiFi calling is already activated). Strangely enough, activating call forwarding works with the Android app “redirect call”.

Hello everyone, unfortunately the forwarding doesn’t work for me even with the redirect call app. Error message: Call forwarding connection problem or invalid MMI code. This app works on my other cell phone without Volte and WifiCalling. So unfortunately no solution either.

Hi,

For whom is it also the case that although the WiFi calling icon is dead in the notification area, no outgoing or incoming calls are possible?

Then Wifi Calling must be briefly deactivated and reactivated in the settings.

This occurs very differently.

Use a Cisco WLAN with WLC and two access points.

Pfsense as a firewall with no external port restrictions.

greeting

feealf wrote on September 10, 2016: With Android devices, Swisscom (currently) has the general restriction that prioritization of WiFi calling is not possible. Even the worst mobile phone reception causes the device to switch to mobile phone priority.

My question: who is in the driver seat for this issue? Samsung, Google or Swisscom?