When

[Barry]

No: HPFGUIDX 179755

While reading DH, I had the strong feeling that JKR's writing was based 
on resistance fighters in WW2. I then asked myself: Teenagers! Where 
are the mobile phones (cell phones) and computers? The dragon flying 
from Gringotts would easily be picked up by satellite and planes. Why 
didn't we see any? Giants would also be easily spotted.
So question:

What time period is HP set in?

Barry