Source? Verizon seems to disagree with you:
https://www.verizon.com/about/consumer-safety/device-unlocking-policy
4G Device Policy
We do not lock our 4G devices, other than our 4G Phone-in-the-Box Prepaid phones. Our 4G Phone-in-a-Box phones may only be used with Verizon Prepaid service for 1 year from original activation date or until payments in the amount specified on the back of the Phone-in-a-Box package are added to the Prepaid account. This is to partially offset the subsidy we provide to make our 4G Phone-in-the-Box Prepaid phones more affordable to customers.
Once either of the criteria above is satisfied, you can dial *611 from your Verizon Wireless Prepaid phone or call 888.294.6804 and we will provide you with programming instructions so you can unlock your phone. If the user guide for your phone does not provide instructions to access the programming menu, we can help you with that as well.
...
Postpay devices
- We do not lock our 4G LTE devices and no code is needed to program them for use with another carrier.
- We do not lock our 3G devices, other than non-iPhone 3G World Devices. The simple code to program such 3G devices for use with another carrier is either “000000” or “123456.” If the user guide for your device does not provide instructions to access the programming menu, dial *611 from your Verizon Wireless phone or call 800.922.0204 for assistance.
- The SIM cards used in our non-iPhone 3G World Devices are locked. We will unlock the SIM card for you at your request.
