My network symbols not showing.

[Android Central Question]

After update my phone android 7 to 8 , network name and symbols is not showing ( like that G, 3g, 4g, H, H+ etc) . Showing just cross(×) sign. But network is still working, When I'm on mobile data then show this, Two Sim card's data connection not working at the same time. So, i want to change this.
( Phone model: Nokia 5, TA-1053 )
I'm talked about nokia care they were say that this is Android update issues not phone's problem.

 

[B. Diddy]

Welcome to Android Central! Sorry, I'm not entirely clear on the problem. You're saying that there's an X on the cell signal indicator, but you still connect via mobile data? What do you mean by "When I'm on mobile data then show this, two SIM card's data connection not working at the same time"?