Size Comparison

Mama Lai bought a new phone very similar to the phone that she had been using.  But she couldn't decide which phone was smaller and asked me:

"Are you in front of the computer?  Go look up my new phone and my old phone.  Which one is bigger?"

And I said "Don't you have both phones?  Why can't you just compare them and see?"  Mama Lai sighed:

"I'm too lazy!!  Use your imagination.  Put your brain to use."