You can make calls via Wi-Fi, 3G or 4G. The person you are calling does not need to be a Teliophone user for the phone call to be free of charge.
Teliophone is available to all Telio customers in Norway and Denmark and requires that you have an active Telio VoIP subscription. The Teliophone service costs 19,- NOK per month and will run nicely on all Android models with Android 3.0 or newer. More information about this service can be found on www.telio.no.