Sprint LG V50 phone on T_Mobile

I want in!

I’m considering the Korean model because I’d like to fiddle with the Dual Screen case...

I’m in Southeastern Mass, which is considered “rural”, so poor-to-zero 5G at my home (and I don’t care about 5G at all).

I see there’s two issues on tmo -- 1) APN settings (apn.gishan.net...), and 2) VoLTE -- but it appears neither are a roadblock (yet).

BUT, I have no clue what drives android updates… Jmco said that when he’s logged into Tmo portal his V50 isn’t shown/recognized as such. Although I’m tempted to get a USA release -- either Verizon unlocked (cuz refurbished), or Sprint unit, I’ve read that those, even if they have the 3-pad contacts (impossible to know based on ebay photos, cuz people use stock images) for the dual screen case, folks say it won’t work cuz it’s disabled in Software (?)

If I get the Korean model, if it has Android 9 on it, then how do force an update to Android 11/12? I know I can usually use Settings and ‘check for software updates’, but will the source be driven by my carrier? By my geographic location? By the existing software on it? And if it’s by carrier or location, then will the update to android 12 disable the dual screen case?

Has anyone here updated to android 12 using the Korean V50? Are you using the [Korean] dual-screen case?

PS, I know the V50S/G8X may be a bit more adaptable, but I like the open bottom of the V505N case -- I plan to regularly swap the dual-screen case for a normal one, AND I use NetDot magnetic USB cables, so I don’t want to have to keep prying the inserts out in order to use the V515N case. (I suppose I could abandon the NetDot cables for a few wireless charging pads--a worthy compromise for all the greatness adopting the V50 will bring! :D