Missing Lte For Mobile Data Mi6

[passion4u]

Hello Community

I have recieved my new MI6 today. I am in switzerland my carrier is Salt.
The problem i have is the following:

When i disconnect my Wlan and want to use mobile data i am not possible to use LTE, instead it always switches to H+ instaed of LTE.

This Problem has only now arrised since i have switched form MI5 to new MI6...
Does anybody have any idea what this can be ?

Regards

 

[huber]

Same problem with salt, Swisscom, Vodafone de, Vodafone es with Xiaomi mi6
Also UMTS problems by Phone calls
Different rom Versions= always same problems

Xiaomi mi6 is currently unusable in EU.