Dual-4G not working properly


Semo87

Members
Aug 21, 2016
8
13
Hello.
I have a Mi 9T Pro with 9.11.14 weekly xiaomi.eu - ROM
I have 2 SIM-cards (2 different operators).
SIM1 for calling and SMS
SIM2 for data
Settings -> Preferred network -> GSM/WCDMA/LTE on both
Both are connected in 4G-mode

The problem is that i don´t receive sms or can´t dial out with SIM1 in that situation.
only if i disable the data-connection of sim2 or change the network mode from SIM1 to gsm/wcdma

i thought the Mi 9T Pro can handle two 4G "connections" at the same time.
Am i wrong?

Or is it a firmware / ROM bug?