$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on One Unlimited for iPhone (all lines on account req'd on plan), 5G Do More, 5G Play More or 5G Get More plans req'd. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req's are no longer met. See vzw.com/bring-your-own-device for details.
I went through the same thing where I could make outgoing calls but couldn't receive calls. The problem I had was that I had my number ported to Verizon as a new customer and it took my old carrier 7 days to get the porting finished.