Digital Republic offers you unlimited access to the mobile Internet. You can access WhatsApp, Instagram, FaceTime, Skype, etc. and make calls with these social media apps without any problems. Classic incoming voice calls and text messages are also possible free of charge with your data SIM card in Switzerland, without the voice option. To receive calls and text messages abroad, you can proceed as follows: How do I activate roaming calls and SMS?
However, normal outgoing voice calls and sending SMS can only be activated with a voice package. You can find more information here: Was ist Digital Republic Voice?
In the customer portal, you can find the current phone number of the SIM card.