Hi Jinvest, I want you to know I do have people looking into this for us, I will keep you up to date with what we find out from time to time.
Hey, did you find a solution for this? I bought an used LG V20 unlocked sprint phone when I was in the USA some months ago. Now it just received the android 8 update and I got invalid sim issue. So not funny.
Did the phone complete the software update? I'll look up the IMEI again and see if it is still showing unlocked. If it is, we'll have to submit the unlock ticket again as a phone that missed the unlock signal.
I'll send you a private message to get the IMEI.
Never did get it figured out. Sold the phone at a loss only to find out that the phone was messed up from the update to the point of functions not working properly, ended up refunding the money back and told the buyer to just keep the phone. I'll never consider buying another LG phone again.