Does the SIM800L works in the US?
I wanted to post an update in April 2021 on the status of this question.
The SIM800L will work in the US, but T-Mobile is the only carrier that it can interface with. AT&amp;T shut down its compatible towers in 2017. T-mobile will shut down its 2G network at the end of 2022.
So, the SIM800L is only good for another year and a half. Maybe you're better off finding a different module!