I just thought again about the LTE/2G problem and discovered the following on the website:
“With the user’s health in mind, Pure always chooses the lowest spectrum available to limit radiation.
The module supports all currently used generations: 2G, 3G and LTE standards at the same time.”
That would mean that the Pure automatically selects 2G because that is the lowest frequency here in Germany and that is good for health. I think that’s really very good 
Since 3G has already been switched off here, that would mean that if 2G is also switched off here, the Pure would automatically use LTE because that would be the lowest frequency. Is that right and is it future-proof, so to speak?
LTE will not be switched off so quickly.