Trial questions


So I have Verizon and getting way to expensive for only a 4 GB plan. I know Verizon network used by visible so I Sumer will get good coverage. I figure maybe start a trial. If I do and get a trial number will I still get calls on my Verizon number as well. For instance I would give family my trial number but keep rest of calls on Verizon number during trial. Same with text. If I do switch I assume can just port over my old number. On billing side if move over my other two family lines they need separate accounts but can I just use mine as main account to pay bill