@JRCL hi yes if you are on the 10 or 15 dollar plan it uses minutes https://productioncommunity.publicmobile.ca/t5/Knowledge-Base/How-To-Use-Your-Phone-and-Plan-Feature...
Does setting up your voice use any of the minutes on your plan?
Yes it does.
After your initial setup, there is no charge to check your voicemail from another phone. You can call the voicemail number (like xxx-580-4001) from another phone, then enter your phone number and pin.