I think the author has done little or no mobile development - battery life isn't even brought up. Sure the latest phone might be in some ways as powerful as a

I think the author has done little or no mobile development - battery life isn't even brought up. Sure the latest phone might be in some ways as powerful as a 10 year old laptop when the hardware is in a high performance mode, but running a mobile device full-tilt is going to drain the battery very, very quickly.