How can I check my iPhone's total call usage?

[iMore Question]

how can check iphone's total call usage

I wanna buy a used iphone. how can i check out the iphone that how old the phone?

 

[housebee]

Re: how can check iphone's total call usage

As far as I know you can't. But why do you want how old is the iPhone? You can check on wiki on what year what iPhone was released