[Google Pixel 4 XL Guides, News, & Discussion] cjegan2008:
I'm pretty sure this method won't work. Even if you get someone in tech support to submit the unlock ticket, the system AT&T uses will auto deny the unlock request if the system says the device isn't paid off. It's a measure to combat fraud. There are work around to this though. If your device has a issue, and you have to RMA the device to Google, then device can be unlocked at that point because the IMEI number on the installment agreement, and the one from Google won't be the same, and the system will allow the unlock to proceed. But that applies to every device and manufacturer.

The other method is to be military, and be on active duty with orders to deploy outside of the AT&T coverage area. That's another method. The issue, is that no one at AT&T, can just submit a ticked override in the system to force the unlock to go through. They CAN submit a ticketed override to push the unlock REQUEST through to the department that handles the system, and they can push the request through if the system doesn't show any fraudulent activity, if the device has been paid off, and the account has been opened for 60 days. Then they will approve it. But if, any of those conditions are not met, then the only exception is being military on active duty. If you are not active duty, then all the above conditions will have to be met. There is no other way around this. The IMEI number is on a database shared between Google and AT&T, and once those conditions are met, AT&T releases the IMEI number from their system and it goes to Google on an unlocked database, and since the unlocked database between Google and AT&T is shared, Google's servers see it as an unlocked device and allows OEM unlocking to be checked and the device can be bootloader unlocked at that point. This is a server side lock, and there's no way around it.

Now other people on here saying AT&T will unlock their device because it's dual SIM, are giving incorrect information, or they were Hoodwinked. Either way, it's false. AT&T will not unlock a device that isn't paid off just because it's dual SIM capable. They couldn't care less. They care about the money, and if it was paid off. This is coming from someone who got their device unlocked through AT&T and tried, very, very hard, to do it without paying the device off first, unsuccessfully. And this is also someone who has their own IT business, and has been doing it for over 10 years. Not one person on this thread got their device unlocked without either paying it off, or being military. I wanted to clear this up.....and now onto Verizon.....

Verizon will NOT be unlocking their bootloader on any Pixel device, period. The reason is, in the past, Google and Verizon had a strict contract arrangement, that stated that all of the devices sold by Verizon would be bootloader locked, even if the device was SIM card unlocked for security reasons. This same arrangement, from what I found out, is still in effect with all of the Pixel 4 variants, and as a result, no Verizon Pixel 4 or 4 XL, will be bootloader unlocked. This arrangement however, doesn't apply to T-Mobile or AT&T, but idk about Sprint. I have yet to see anyone say anything about the Sprint version being bootloader unlockable. If you check my other posts you will see I did extensive research through back channels, and I can say with certainty all of the above information is a fact.