Whether its preparing for a natural disaster like a hurricane or a russian
invasion, proper advance planning makes a difference. The cellular network
operators and national regulator in Ukraine have been preparing for years.
"It must be kept in mind, that many of these changes could not have taken
place over-night, that they are the culmination of months, and in some
cases years of preparation."
The Mobile Network Battlefield in Ukraine - Part 1
https://blog.adaptivemobile.com/the-mobile-network-battlefield-in-ukraine-part-1
The Mobile Network Battlefield in Ukraine - Part 2
https://blog.adaptivemobile.com/the-mobile-network-battlefield-in-ukraine-part-2
"Finally, one unusual perspective that has been taken by some observers,
in trying to explain why Ukrainian Mobile Networks were still functioning
after several weeks of war, was to put it all down to decisions made by
the Russian forces.
[...]
We believe that this viewpoint is fundamentally wrong, as the
cadence and scope of the decisions made by the Ukrainian Mobile Operators,
both before and after the Invasion - as well as their ongoing work to keep
them active - show that they are clearly engaged in the fight to keep
these networks alive."
