Using a refrigerator analogy here is absolutely absurd. It's a large physical object. I can store more copies of Wikipedia on my phone than I can ever store in a refrigerator
The refrigerator is presumably an example to illustrate the general point, that scope is limited to where there's reason to believe there is likely evidence.
If a suspect is alleged to have been on the phone with an accomplice while committing a crime then a warrant for call logs during that time period would be appropriate, but not just open-ended trawling through all the suspect's devices for potential clues, is my understanding.
