According to @ingbrzy the China ROM will say 5G anytime it detects 5G. Even if it's not using 5G. So it could be that. No clue though, you would think the addition of band 66 would help your data speeds?Ordered the global version off of WondaMobile on April 30th, i paid for the premium shipping. Left Hong Kong on May 4th, and was delivered to my doorstep by May 6th. (I'm in USA)
Honestly I'm impressed. Giztop took over 10 days just to ship my order.
After having botht he Chinese model & the Global model, I've noticed that on the Chinese model my signal said 5G but when I would run a SpeedTest it said LTE. (Tmobile). However when I put my sim in the Global model it says LTE and I've noticed my speeds are a bit slower. Perhaps there's some hidden menu or settings I need to tweak.
On a side note, would you mind sharing your thoughts, summary, review, etc of using China ROM Vs Global in the US? Also have you flashed .EU on the China model?