- 4G
- 5G
- Fixed voice
- Digital TV
- SMS
- voice
It took _several_ days to bring everything back online. [0]
No Ransomware requests issued, most likely a state actor.
Many people speculate the attack was a training ground for Russian cyberwarfare.
I find this a much more likely failure mode for communications (including emergency services) than network operators not managing uptime because of blackouts.
[0] https://arstechnica.com/information-technology/2022/02/vodaf...