Comment by alerighi
2 years ago
The problem with 4G (and 5G) is that it supports only internet traffic. Phone traffic is passed trough VoLTE that is VOIP on the network. Is something that is fairly new, few years ago only a couple of operators in my country even supported that, and thus phones had to drop to 3G to handle calls. Also VOIP is not that reliable and presents problems especially with different networks.
The problem is when the internet connection is not so stable, and thus VoLTE doesn't work that well. The safer option would be to drop to 3G or even 2G if available to complete emergency calls.
I think you missed the point in the post that you are replying to saying carriers have dropped 3G and the only remaining 2G network is also on its way out. Where I live all carriers are planning to phase out 3G by the end of 2025. All but one carrier have already phased out 2G.
We need to forget about falling back to 3G or 2G as that is not a viable solution in the long run. The carriers and phone manufactures have a responsibility to make emergencies calls work well over VoLTE.