How to replace the plug on the Catalyst Waterproof Case

The Catalyst Waterproof Case is fantastic at keeping your iPhone from getting wet, but it only works if it's sealed up tight. The plug that seals up the Lightning port at the bottom of your iPhone is super important if you want the maximum protection for your phone. If your plug fell off and you can't find it anymore, then you'll want to get a replacement plug quick to ensure your iPhone isn't left exposed to water or other debris.

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How to replace the plug on the Catalyst Waterproof Case

  1. Gently pull your old plug from the bottom of the Catalyst case.
  2. Line up your new plug with the grooves in the Catalyst case
  3. Push firmly to seal the plug to the case.

When you've replaced the plug on the Catalyst case, you're going to want to make sure you test the Catalyst Waterproof Case for any leaks that the replacement may have caused.

How to test your Catalyst Waterproof case.

The video above form Catalyst shows how to test your case in a clear and concise matter, but here's a quick breakdown of how to do it.

  1. Take your iPhone out of the case
  2. Reassemble the case with your iPhone inside.
  3. Submerge the case in water.

As the video says, if there are a bunch of bubbles escaping from the case, this is probably a sign that the case isn't sealed from water and you shouldn't use the case.

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Luke Filipowicz
Staff Writer

Luke Filipowicz has been a writer at iMore, covering Apple for nearly a decade now. He writes a lot about Apple Watch and iPad but covers the iPhone and Mac as well. He often describes himself as an "Apple user on a budget" and firmly believes that great technology can be affordable if you know where to look. Luke also heads up the iMore Show — a weekly podcast focusing on Apple news, rumors, and products but likes to have some fun along the way. 

Luke knows he spends more time on Twitter than he probably should, so feel free to follow him or give him a shout on social media @LukeFilipowicz.