I had installed Redmi Note 4 MTK Global (Version: 7.9.22 (MIUI9) developer ROM http://bigota.d.miui.com/7.9.22/miui_HMNote4Global_7.9.22_a338303e02_6.0.zip) and it worked fine, at least with one single sim, I don´t know if it has problems with two sims. It has no bugs, but battery drains faster...