Connection to unwanted mobile data

[ADRI16]

Hello, 6 months ago I have my XA Ultra and I have a problem that I can not solve.
EVERY DAY, it is automatically connected to mobile data, even though the WiFi is on and the data option is disabled.
I have already restored the system 3 times through the Xperia Companion software and I have also restored it to factory settings and I still have the problem.
It has no guarantee, because I bought it in the USA and I live in Argentina.
Does anyone know what can I do?

[CameronT]

Hi @ADRI16, welcome to the community. I am sorry to hear about this issue.

If it is automatically connecting to mobile data even after a software repair it is likely the firmware or a pre-installed app on there causing the connection. If this is the case there's not a lot we can do to stop this

Can I just confirm, after you complete the software repair using Xperia Companion does the issue go away, then only come back when you restore data or install apps?

If you want to remove the mobile data connection entirely you can remove the APNs from the phone under Settings > More > Mobile Networks > APNs.