Faster mobile unique advantage?
You’re forgetting:
60 minutes of international calls to EU + US and CAN every month
45 days of roaming in the EU + 2 GB of data traffic
SMS/MMS included in countries outside the EU
Here you will find all the details of the new Natel subscriptions
https://www.swisscom.ch/it/private-customers/mobile/subscription-tariffs.html
Your mobile subscription by switching from Infinty XS to inOne Mobile S would get a noticeable improvement.