Verizon are a bunch of bitches about it, they’re as bad as Samshit. They’re a match made in hell tbh.

Of the major 3 carriers, it’s always been T-Mobile that’s the “most friendly” to tinkerers. Technically, you can’t unlock the BL until it’s been carrier unlocked, which TMO is generally OK about overriding their requirements as long as you’ve had an account for awhile