Eli5: How are phones waterproof even though the charging port terminals can be exposed to water and not short circuit them?

Question

Eli5: How are phones waterproof even though the charging port terminals can be exposed to water and not short circuit them?

In: 4320

Answer 1

Every port going through a water resistant phone’s exterior has a little gasket that isolates the port from the rest of the phone, so only the port is exposed to water and can have is power disabled when the phone detected the port has water in it. The charging port itself on a modem Samsung device is a removable piece connected to a circuit board and the port itself is surrounded with a rubber sock-like covering that seals up against the other components to keep any water inside the port and away from everything else.