I guess there's nothing they can do on this very specific problem, unless you would provide a logcat file while enabling/disabling data on your Max 3.
I would suggest MatLog if you're rooted, otherwhise go for adb logcat via your USB cable
Mobile data not working for me. I did a clean flash and it recognises the network, full signal and everything like normal...all the APN settings are correct, I can even choose 2G / 3G / 4G etc... But with the data monitor in the status bar you can see it simply refuses to receive or send any data. Really weird bug never had this issue before.
What's really weird is it receives the Google Authentication (OTP) SMS so 2G must at least be working, and I can receive incoming and outgoing calls, just no mobile data, not a single bite even though it connects and authenticates successfully with my mobile providers 3G and 4G network.
We're not responsible to anything that happens to your device or your data. You flash these ROMs on your own responsibility.
Whatever caused a factory reset on your specific device has nothing to do with us, we don't force reset the device.
I installed the ROM and flashed magisk and updated to the latest version of it and installed my modules which works fine but the root permissions aren't available even for root checker.
Tried to uninstall magisk, wipe dalvik and cache then reboot and reinstall magisk and the same problem persists.
I already said this here but they requested a logcat to fix it.
I and other users just fixed it by installing stock china dev 9.1.26 on twrp, unlocking the bootloader once more, booting that china (it's working here), installing twrp again, flashing eu dev 9.1.26 again
it is to be fixed at Xiaomi central.
You can't say "constantly" I would say "sometime". Today I didn't see it once... but it will come at night most of the time.
This effect is the due to the brightness slider that lost the consign and return to lowest position.
This has been improved since july because it was permanent at this time.