mobile network problem after android 8.0 update

[ZmeyJey]

I updated my XA1 Ultra (dual sim) to 8.0, and now there is no connection to mobile network. I tried to reset apn settings and phone settings, but there's still the same problem.

[JerryFish]

I'm experiencing the same problem.

By using only the SIM 2 slot without using the SIM 1 slot, we could use the mobile network.

Unfortunately, I have not confirmed the state of using two SIMs, so I do not know what to do in that case.

Besides this, I have a problem that Wi-Fi tethering does not work.

Even if Wi-Fi tethering is enabled, the SSID can not be confirmed with the Wi-Fi client.

Although you may be able to use it by changing SSID and password several times and repeating ON and OFF of Wi-Fi tethering, stable improvement measures so far have not been found so far.