Yes, this is what I said. Xiaomi decide for which operator the 4G can appear. So you can't display 4G if it was not intended by Xiaomi, you are locked with LTE no matter what you do with the checkbox, and it was what he was asking.Of course xiaomi has nothing to do with this , you think that xiaomi decided for some devices to use 4G sympol and some other devices the LTE sympol , no chance for this..
If you said that it's related to mobile operator you're much closer ..
On my case though , i can change the sympol with the option i said without problems .. i can have LTE or 4G without problems..