Hi Wayne! In the mobile app, there is a setting for this under Phone > Outgoing Calls > Direct dial data (choose Carrier minutes only).  Hope this helps you!

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and if you want all incoming to be on cell. Toggle on the Mute Incoming Call. it then uses the cell minutes and not data.. VoIP is not there yet with mobile. I cant understand why RC is not making it easier to find settings. Honestly cell minutes should be the default. Most plans are unlimited mins but data overages can be huge!

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I do not see in the app where to get to the outgoing calls.  what version app

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im using the RC APP vs 20.2.35.65587. Attaching screen shot of what I have found works the best and to use cellular minutes always. 

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