I am running the MIUI 8.0.4.0 (LXKCNDG) Stable Release from Aug 31, for MI4C. I'm currently roaming in Asia with a U.S. Sim Card. Whenever, I reboot the phone or get off wifi, in order to enable roaming data, I have to go into sim card settings and first change the preferred network to "2G". Once the data is connected, I can switch back to LTE in preferred network. If the setting is LTE or 3G in preferred network, then roaming data won't connect even if I have roaming data turned on. This seems like a bug to me, I wonder if anyone else is having the same issue?
