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Minor nitpick - 2G hasn't shut down, and the way things are it probably never will.


In a large number of places, it's either already shut down or will be shut down soon:

https://en.wikipedia.org/wiki/2G#Past_2G_networks


Minor nitpick - 2G hasn't shut down, and the way things are it probably never will.

AT&T's 2G network shut down January 1, 2017.

The old Sprint 2G network shut down at the end of May.

T-Mobile's 2G GSM and Verizon's 2G network shut down at the end of this month.


What do they use for 2G M2M links?


Upgrade them to 3G M2M links... And then later 4G. But not at the exense of the network operator.


I think it is in the US? At least carriers wouldn't let my 2G devices online anymore.




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