[Fatnino]

Naturally. Why would a cell carrier want to expend energy beaming signal into space?

That said, you do get the occasional misaligned antenna or weird bounce off terrain that gets you signal midflight for a minute.

[barcoder]

How easy is it to report those type of issues?

[krisoft]

What do you like to report? That cell signal was available somewhere?

[dylan604]

make a phone call, and let the big data folks raise eyebrows when they see the elevation the call was made.