This problem is related with the xiaomi.eu ROMs (and possible only on Mi4c, because other phones running xiaomi.eu ROMs like RN2/RN3 are displaying the carrier name correctly), on the original miui.com I don't have this problem. After registering on the mobile network, the phone is supposed to show the carrier name received from the network, not the original one that is known from MCC/MNC database or sim, with the country code. For example, when I register on the network "RO ORANGE", the phone displays the name that the network is broadcasting "orange" only for a fraction of second, then "RO ORANGE" again. On any other phone, the carrier is shown as "orange". Any fix planned for this bug ?