[Xiaomi Mi MIX  Questions & Answers] mac231us:
I translated parts from the listing...all bands have ranges...so here apparently the 800 is included in the 850 B5 coverage (W-CDMA or FOMA)..so yes, but this does not seem as some modification-related (though appears to be ROM-driven, although item is used not new, so one can say modifications could have been made but they are referring to the ROM as such it seems to me)

Seller's Comment: ★ Manufacturer's warranty 6 months, Japan specification customized for Japan, Japanese company support 365 days support by a technician. ★ Global Version Japan Specification, Full Ceramic Body • Japan Band Available, FOMA Plus Area Applicable ★ Domestic Stock • Domestic Shipping. ★ RAM 6 GB ROM 256 GB model, 6.4 inch FHD • 4400 mAh large capacity battery installed.

Main features ●

Xiaomi Mi Mix Exclusive Edition Global, 6.4 "2K OLED (Yuki EL) FHD, RAM 6 GB ROM 256 B model, 4 G LTE + 3 G (voice call) simultaneous standby.

Dual SIM slot mounted (nano SIM x 2),

Dual standby.

Global Because it is European version, Japanese specifications (setting screen: Japanese notation, some English notation) corresponding to Google series applications including Japanese and multi-language including Play store are available.

Fingerprint ID + Dual Wi-Fi + back 16 million pixels + front 5 million pixels, camera shake correction function, real time HDR dual camera installed.

SIM lock free 2 slot (Slot 1 nano SIM 4 G LTE / 3 G WCDMA + Slot 2 nano SIM 4 G LTE / 3 G WCDMA) Dual standby.

6.4 inch 2048 x 1080 (2K) OLED FHD Screen with 4400 mAh battery installed.

Available SIM: docomo Xi Crossy SIM 4 G LTE + Foma SIM, SoftBank 4 G LTE SIM and Garaka SIM available, each company MVNO data SIM compatible.

★ Simultaneous standby is possible with the following combination, "4 G LTE data SIM + 3 G voice call SIM or 4 G LTE voice call SIM (Volte compatible) + 3 G data SIM".

★ We can use B6 (800 MHz) Japan Bnad included in B5 (850 MHz) in Global Europe version of sale so we can correspond to FOAM plus area.

Devices that do not have the Japan Band, which has been flushed with the Chinese version in the custom ROM even if it is called Global Version, is on sale.

Also note that manufacturer's warranty and maker repair will not be covered by custom ROM terminals.

6.4 inch full ceramic body · With Snapdragon 821 · 4 G LTE + 3 G simultaneous standby ★ Xiaomi Mi Mix Exclusive Edition Global Version ★ Japan specification Japan Band correspondence · 4400 mAh battery · full NFC correspondence (6 GB + 256 GB, black manufacturer's warranty included)

By Xiaomi

5.0 out of 5 stars 1 customer review

Price: ¥ 126,800

Inclined within 4 to 5 days. Click here for details of availability.

Ships from and sold by Honey Tech (Monday, New Year's holiday is also closed, sales of inventory items can be sent on the day.) Convenience Store, ATM, Internet Banking and E-Money payment methods are available for this seller item.

1 used from ¥ 124,800

Size: 6 GB + 256 GB

EDIT this device will be a gold mine indeed if someone actually can make LTE bands 12, 17 and maybe 29 and 30 to work (really especially here in the U.S and I would then be rushing to any vendor site to grab this..maybe the white one without the ceramic back may be more global? 1Q will tell a lot with CES etc)