What is the voice call under battery utilization?

[Android Central Question]

In my battery usage report, it tells how much of the battery was used for the phone app and then there is something called voice calls. My phone shows some usage of it but doesn't explain what it is. Why is there a phone and separate voice calls listed. Is it an app or a software function?

 

[methodman89]

Basically, they just break it down how you used the battery. The 'phone' is a computer, and the phone function is what you are seeing.