How to know if the ROG phone 3 is global or chinese version
What does it say on the back glass? Tencent games or Republic of gamers?
Best indicator is the inscription on the glass back. Tencent Games = Chinese.
Republic of gamers = Global.
If you think you have the global, then you should receive FOTA updates automatically in your notifications. If not, then it's probably from the chinese market but with the "republic of gamers" branding.