Have a phone you love? Get up to $500 when you switch and bring your phone.
Up to $500 via Verizon e-gift card (sent w/in 8 wks). Port-in & activation of 4G LTE/5G phone on select Unlimited plans req’d. Line 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.
In addition to what tikibar1 stated your last resort would be for Verizon to provide a new SIM card. It is rare but the SIM cards somtimes need to be replaced. I'd def begin w/ what tiki stated with the link in the post above.