hi,
there was no problem when i was using miui9 or Los 15.1 but i installed AEX pie-9 (and installed modem_466d_v.00050.zip and then firmware-30s-x820-le_x2.zip) when I restarted the phone or turned the airplane mode on / off there is no problem but after a while i could not send / get sms or phone call. i can use mobile data but i can not make a call or send sms until reboot the phone or turn airplane mode on / off. i am using Los remixed 8.1.0 v3 now and i have the same problem. what can i do to fix this problem?