I’ve kept my phone the same for 20 years. This welding quality has been the case since Swisscom switched to VoLTE. Some filter is bothering you. I’m an opponent of VOIP etc anyway… the old cell phone network was great and now all you want is VOIP… because it can save a hell of a lot of money.

By the way, I’ve already made calls with a headset and it’s also bad. And as I’ve said several times, when I call a landline the volume is relatively good…

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As I said, the problem is active with full reception in the open air. It must clearly be due to a filter or setting on my phone number. And it will be difficult to find this, which means I will test other providers and then switch privately if necessary.

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@Wifeiplei29

Even if it’s VoLTE, you can turn it off. But I have only had good experiences with VoLTE. The voice quality is much better than over 2G.

As @hed wrote, I absolutely can’t understand that you’re the only one who always has poor quality no matter where you are and with which cell phones. If this were normal on the Swisscom network, this thread would be full.

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@Wifeiplei29

As @Samsi wrote, you can switch off VoLTE, then this point is eliminated as the cause of the error.

And if you have the SIM or If you suspect your number, you can certainly use your SIM on a friend’s mobile phone and use their SIM on your device and make a few test calls with both of them. If the error moves along, you know that it is with the SIM or related to your number.

And as far as quality is concerned: I have been making calls with Mobile since the time of Natel B. And the call quality has increased with each generation, clearly audible most recently with the introduction of HD Voice. Even elderly people usually have no problems communicating with mobile devices.

And when it comes to VoIP, you also have this technology on the landline. I don’t think there was any deterioration compared to ISDN.

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24 days later

Dear Swisscom

Can you explain to me why you don’t allow the setting between Mobile Preferred and WiFi Preferred on Android phones that are active with WiFi calling?

If you search the net, it seems to be a flag that the provider can specify.

Tested it myself with a Yallo and Salt SIM on a Huawei P30 Pro and S9+.

After changing the SIM and resetting the APN settings, these providers give you another option below Enable/Disable WiFi calling whether you prefer the mobile network or WiFi.

As soon as you insert your SIM, the option disappears after provisioning and mobile is definitely preferred in the background.

The phones only switch to WiFi calling mode if there is a virtual loss of signal or forced airplane mode but WiFi is activated.

In our case, for example, this is externally annoying because we have minimal Edge/3G reception at home (and therefore no VoLTE) but the devices stubbornly prefer the mobile network due to their presets and often lose the signal completely. A clean handover to VoWiFi is not possible due to the lack of VoLTE.

Hence the request to give customers the choice 🙂

By the way, with a Oneplus 7 Pro and a few workarounds, VoLTE and VoWifi work for me and the option with preferred remains 🙂

This is just a side note, but it would be really helpful if this were possible in the normal way on devices that are fully provisioned.

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@zoon

I don’t understand it either. I also have a SIM card from Swiss Mobile (airline) in my dual SIM device. I can easily select the prioritization there, but not with the Swisscom SIM. The same selection option is available on SIM 2, while on SIM 1 (Swisscom) it is simply not there on the same screen.

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Exactly Roman, it is a part of the provisioning that I consider to be quite unnecessary.

One reason I can imagine, however, is that emergency calls are not possible via WiFi calling.

But you could still give the user the choice but prefer the mobile network by default.

In addition, with minimal Edge/3G reception, I can’t always benefit from HD Voice, for example, which would be possible with WiFi calling.

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WLAN is “mobile communications for poor people”, WLAN lacks QoS mechanisms. In heavily used multi-user environments, this results in dropped calls and poor voice quality.

There is also the WLAN background scan, which leads to regular, short interruptions/pauses in the telephone conversation on smartphones:
[https://www.ghacks.net/2011/12/13/how-to-disable-wlan-background-scans/](https://www.ghacks.net/2011/12/13/how-to -disable-wlan-background-scans/)

\=> VoWiFi is an emergency solution that should only be used if cell phone reception is missing or patchy. The use of VoWiFi should be done consciously via forced airplane mode but activated WLAN if there is mobile phone reception.

Conclusion: The mobile phone provider Swisscom has configured everything correctly and competently.

You should also avoid using VoLTE if possible:

https://community.swisscom.ch/t5/Mobile/VoLTE/m-p/538975#M4854

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One can argue about WiFi calling. The problem is that each device manufacturer determines the settings when changing and not all cases are supported, such as switching from WIFI calling to VoLTE and back.

But VoLTE is an absolute must and superior to the other types. The KPIs are significantly better. We try everything to ensure that as many devices as possible use VoLTE.

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I’m actually convinced of VoLTE, so I couldn’t complain. But as you write @Anonymous, you want as many devices as possible to use this. I have a Natel@Go subscription myself, but I know some people who have prepaid, and they wouldn’t be unhappy if they could benefit from it. When will this be the case that prepaid can also use VoLTE?

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I’ve communicated this here several times - just a few weeks ago. The plan is that new prepaid cards will be able to use it from November. The current cards will then migrate from the old to the new IT over several months. Then you can use it too.

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a month later

@zoon wrote:

Dear Swisscom

Can you explain to me why you don’t allow the setting between Mobile Preferred and WiFi Preferred on Android phones that are active with WiFi calling?


This week I discovered by chance that VoLTE and WiFi calling are now finally working for me (Essential Phone on Wingo) (maybe a little longer, but not yet a month and Android 10 had not brought any improvement before). What surprised me most, however, was that despite the network being on, “Wi-Fi call” appeared on the display. The topic of preference settings is obviously handled differently in Konzern (and please don’t turn it off for me now 😬).

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2 months later