If the phone does not wake up from a powered down state what is the point??
If I leave the phone in the basement how can it hear a conversation two floors up? Or in a vehicle outside the house?
Even if a phone was on it won’t hear anything two rooms away if it’s in a running fridge.
People need to be a bit grounded in reality here.
Are you saying your phone was OFF when you put it in the Fridge?
You aren’t NSA or CIA.
Btw, they can trick you into thinking your phone is powered down.
Turn your phone on and put it in the fridge. See if it rings.
Some Refrigerators will work. Some won’t.