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@Heiner70 wrote:

No, that’s definitely not the case. This is not an Android device, mobile data is disabled. I use the MobileID on the Swisscom SIM card, not the app!

The terms of use state: “To use Mobile ID, an active connection to the telephony and SMS services in your mobile service provider’s network is required.”

There is nothing about data connections.

I check the account balance before requesting a MobileID and after requesting a MobileID and my account balance empties. If I don’t use MobileID, my account balance remains the same, so no other application uses the mobile data. I’m also constantly on WiFi.

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Thanks for your clarification regarding the mobile operating system. My quote of the device and system requirements comes verbatim from the [https://www.mobileid.ch/static/MID\_App\_NB\_DE.pdf](https://www .mobileid.ch/static/MID_App_NB_DE.pdf)

This is from the MobileID website itself, dated November 2020 and clearly states that a mobile data connection is necessary.

WLAN is of no use in this case, just as it is with MMS (I know: legacy - I’m just giving it as an example), where a mobile data connection is also mandatory and WLAN is of absolutely no use.

What is the source and date of your information? - It’s possible that something has changed.

Until a week ago, I regularly used Mobile ID as 2FA without a mobile data connection to access my Swisscom Kundencenter.

Unfortunately, I can no longer test whether it would still work.

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@Werner wrote:

Until a week ago, I regularly used Mobile ID as 2FA without a mobile data connection to access my Swisscom Kundencenter.

Unfortunately, I can no longer test whether it would still work.

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At home or abroad?

This is about roaming.

@Anonymous

Sorry, I didn’t notice.

My use was domestically with a direct telephone connection to the Swisscom network.

There is a clear distinction in the document between use in CH and use in EU, but the device and system requirements do not differ in this respect: in both cases it says “… establishes an active connection to the SMS and data services in your mobile phone provider’s network.”

The fact that @Heiner70 observes a debit of (data) credit supports this announcement from MobileID.

sorry, I didn’t “invent” it (I can only read) 😁

@Heiner70 I tested it today with a work colleague from DE who also uses a Swisscom prepaid (inOne mobile prepaid) with Mobile ID.

1. Connection via WLAN -> Mobile ID works -> no debit.

2. Mobile data connection active -> Mobile ID works -> no debit.

3. Neither WiFi nor mobile data connection active -> Mobile ID works -> no debit.

Tariffs within EU/Western Europe:

Incoming calls (EU/Western Europe): 0.27/min.

SMS to Switzerland and to the country of residence (EU/Western Europe): CHF 0.27/SMS (Max. 160 characters)

Mobile data use above the basic tariff: Not possible as a cause due to the costs.

Please check on My-Swisscom which connection was exactly billed according to Verbindungsnachweis.

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@Heiner70 wrote:

Tariffs within EU/Western Europe:

Incoming calls (EU/Western Europe): 0.27/min.

SMS to Switzerland and the country of residence (EU/Western Europe): CHF 0.27/SMS (Max. 160 characters)

Mobile data usage above the basic tariff: Not possible as a cause due to the costs.

Then the MobileID will probably be handled via SMS. First request from MobileID during a login attempt: 0.27 CHF, response with the PIN again 0.27 CHF and then apparently another response from MobileID 0.27 CHF. A successful authentication costs me 0.81 CHF. I don’t currently have full access to mySwisscom, and I also doubt that there is relevant individual proof of connection there for prepaid.

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But there is. In MySwisscom under Prepaid Usage => Connections. SMS are also listed there.

Hello everyone

Mobile ID can also be used free of charge abroad.

During a system change, some prepaid customers experienced malfunctions.

Thanks to your reports here, our technicians were able to find the cause and fix the error for all affected connections.

Greetings Samuel