No, You have than FDD-LTE ( Unicom) and of corse TD-LTE(but in Yours country in this mode support only 2G) but its not official, its extra add from devs.
Official Mi5C support only China Mobile TD-LTE and this phone is only for China.
You buy this phone to yours own risk. They dont sell this phone Official outside China.They sell this phone only in China and only for China Mobile.
Its very small chance to fix this issue by devs, because no one in China Mobile dont have this issue. Even in Europe users dont Yours issue.
Oh, ok, but when I use MIUI 8 (OS: Marshmellow), that sim card is work without any problem/issues (random rebooting), so when I upgrade to MIUI 9, that issue (random reboot) is coming to my mi5c. So what do you think? is still not supporting band or else?