I am using a German SIM from Deutsche Telekom in the GL-E750. I am raoming in the Netherlands and by default the device joins "ODIDO" as mobile network. Where I stay, "KPN" has a better experience so I'd like to have the GL-E750 use "KPN" as roaming provider instead of "ODIDO". How do I manage to do so? There does not seem to be an option in the web interface to switch providers.
Can anyone help a noob here? Do I have to SSH into the device and then...?