system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are newer phones waterproof for 15 minutes but not 45 minutes?

 Why isn't it a thing where the phone is indefinitely waterproof? Why does the duration matter?
gpt
The water pressure will slowly force water through the seams in the phone. However, the seams are so tight that it takes a while for the water pressure to force water through. But eventually it will.