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Phones

Are SIM Cards Waterproof?

Technically Yes But There’s a Catch

SIM cards are designed to be reasonably durable. The plastic body and the metallic contacts themselves can withstand a small exposure to water without permanent damage.

There are some risks in two main areas though.

Prolonged Immersion: Leaving a SIM card submerged for an extended period will eventually allow water to seep in and damage the electronic chip inside.

Corrosion: Even short water exposure can leave residue on the metal contacts. This can cause corrosion over time affecting the SIM card’s ability to connect with your phone’s reader.

Practical Things

Minor splashes: Likely won’t harm a SIM card.

Accidental Deep Dunk in the Water: Quickly remove, dry with a soft cloth and reinsert your SIM card once it’s completely dry. It should still work.

Total Submersion for Multiple Minutes: The chances of your SIM card surviving this are slightly lower. Drying it might work but there’s a higher risk of damage.

If Your SIM Card Gets Wet

Power Off: Turn your phone off immediately to prevent electrical shorts.

Remove the SIM Card: Eject the SIM tray and take out the card.

Gently Dry: Pat away surface moisture with a soft and lint free cloth.

Wait: Let air properly dry the SIM card for at least 24 hours before reinserting it.

Bottom Line: While SIM cards have some water resistance, relying on this isn’t wise. Protect your phone from water to keep your SIM (and the rest of your device) safe and functional.

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