Get Verizon working

[K4sum1]

For XZ1C, currently this is a bit of a I just need to test it. My XZ1C is broken, and by the time I get another, I will be back on T-Mobile. In previous testing without an mbn applied, my XZ1C didn't seem to pick up the Verizon network at all. Not sure what would be needed to get it to connect or if the Verizon mbn would fix it. Just needs to be tested.

For XZ2C, calling seems to work only in 19.1 or later. MMS seemed to be broken, but not sure if that's an APN issue or something else. In 19.0 or before, calling with Verizon only results in a Server Unreachable error. Not entirely sure why.

For XA2, I wasn't able to get it working, same error as XZ2C but in 19.1 even. Although I may need to test more.

I don't think OpenCustomizationSelector automatically applies the Verizon IMS profile. It does exist on the XZ1C in both Android 8 and 9 and can be manually applied. Not really sure what else would be needed,

I think I prefer the options of OpenCustomizationSelector, being able to pick a modem at any moment, and reapplying and other options. I wonder if the modem switcher in LineageOS 18.1 and later would be needed for Verzion though. Would require testing I guess, but not sure what to do.

[K4sum1]

So thinking about it, I assume Verizon is unlikely to work on XZ1C. They must use some sort of weird VoLTE system that uses authentication of some sort, and even though the XZ1C has Verizon mbns, they don't match the size difference seen in the XA2 Verizon mbns.

Edit: XA2 mbns do not work on XZ1C

Maybe it could just work in testing, when I get around to getting whatever free trial of Verizon service to test with I'll at least try, but I am doubtful.

Maybe someone in California could hit Verizon (and AT&T) with a SB822 lawsuit and force them to not whitelist devices and (for Verizon) use the ir92 standard, but nobody that cares has that kind of money.

[K4sum1]

For now I think I want XA2 to use OpenCustomizationSelector. The Lineage implementation is completely wrong as it expects the newer mbn type and location. XZ2C I'm not sure what I want to do just yet.

[K4sum1]

My only guess for XZ2C is that this commit only in 19.1+ sources is what gets Verizon working since it seems to be the only relevant thing.

LineageOS/android_device_sony_tama-common@42408ec

Seeing as 19.0 without the modem switcher has the same problems, I highly doubt it's some change in Android 12 or the system itself that fixes it. I wasn't able to get 18.1 to build myself, but I believe I should just be able to swap it in the ROM and see what happens. Will need to be when I have access to Verizon SIM again though, which idk when that will be.

[K4sum1]

So I tested with the newer binary from 19.1 with 18.1, and same issue. I will not be putting in any more effort into getting Verizon working as they're a shitty provider. When I get around to adding a customization selector, I will use the older style one for XZ1C and XA2, and newer for XZ2C.