We don't have any information regarding the update for Mi MIX 3 5G. Yes, I know that it's frustrating for a flagship device to get abandoned to easily. But it's out of our hands. A few users who contacted the online customer service received news about a security patch update by June end and MIUI 12 update by September. We don't know for sure how far this will be done, but that's what we know so far. Android 10 seems to be far-fetched, but atleast getting the latest MIUI would be a relief at this point.

For now, all we can do is patiently wait for the update to come as suggested by the customer service. Let's see how it goes. Thank you for your understanding.

Cheers! :-)