I have some errors on MIPAD 4 LTE ver:
- Some 5ghz wifi shows only with sim attached.
I have 2 new Huawei routers that do not allow 5GHz WiFi if there is no simcard.
They also do not allow 5GHz WiFi when roaming.
And when I do have 5GHz WiFi running, they tell me I'm not allowed to use it outdoors.
Not that the signal might be weak, but it's not allowed.
Some kind of little known radio interference regulation?
So there seems to be something peculiar about 5GHz WiFi that we mere mortals are not told about.
I have not had any problem like this with my Xiaomi phones - yet.
Addendum:
Found this in the built in information in my E5788 router:
"Caution for using 5GHz Mobile Wi-Fi.
According to radio law, the 5 GHz W56 channel can be used indoors and outdoors, but 5 GHz W52 and W53 channels can only be used indoors. When the (house) icon is displayed, the device should be used indoors."