Why are maps not complete in "find my phone"?

[iMore Question]

It comes up but there seems to be a big checkered section thru the middle

 

[Just_Me_D]

Re: Why are maps not complete in "find my phone"?

I don't know, but on my device, the map is detailed, especially in regard to my specific location. As for "a big checkered section thru the middle", I'm not seeing it.