Thanks for your answer! I need to know before I buy a prepaid SIM. I already have a prepaid SIM of another provider that does not offer Wifi-Calling. It is a bit of a scam of the provider to deactivate such a feature and not providing this information in the description of the subscription. So I need a confirmation of Swisscom that wifi-calling is a feature that I can use for a prepaid SIM before I change provider. I also need to know which of the two subscriptions "inOne mobile prepaid basistarif" or "inOne mobile prepaid go" offer it and whether it also works abroad.
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