Note 8 & 9 origionally purchased through Verizon. Both work with Verizon SIM card. Verizon tech says the phones are not locked. I reset network settings. Incerted a Consumer Cellular SIM card, rebooted.  But it says " SIM card is not from Verizion" and will not work on with a Consumer Cellular SIM card. on both my note 8 and note 9. 

I also have a Note 10 and the  Consumer Cellular SIM card.does work on my Note 10.

How can I remove Verizon from the phones 8 & 9?