Your iPhone must be absolutely totally clean before you put it in the case. This is so you don't get ugly 'oily wet looking areas' on your touch screen.
Keep out all dust and damaging particles.
Make sure you have the clearest possible picture
Insert your iPhone
Place your iPhone into the back cover, face up, and press firmly into back cover.
Close the Case
To close the case and complete installation, follow the steps in "Assemble the LifeProof Case" above.
Check the watertight seal
Check for fine hairs, dust, crumbs, and lint
Close the charge port door
Screw in the headphone jack cover
Press the home button to check your iPhone works
How do I perform a water test?
Assemble the LifeProof Case
Pick up the front of the case, holding it by the sides.
Line up the back of the case with the front.
Squeeze the top edges together with both hands: thumbs on top, fingers beneath, so that the pieces click into place.
Work your way down both sides in small increments, squeezing the front and back of the case together with your forefingers and thumbs all the way to the bottom.
Place the case face down on a smooth, hard surface such as a table-top. Firmly press around the entire perimeter of the case.
Squeeze the front and back together near the charge port door. This area is easy to miss so check it carefully.
Apply firm pressure in a rubbing motion around the inside rim of the back of the case to ensure that all internal latches are sealed.
The case should be entirely snapped closed all the way around the perimeter.
Visually check the case to make sure the seam around the edges is fully closed with just a very fine evenly spaced gap between the front and back.
This is important to do every time before you put your case in water to make sure it has not come open a little from an impact or other stress to the case.
Close the charge port door firmly until it snaps shut.
Screw the headphone jack cover into the headphone opening so that it is tightly closed.
You are now ready to do the water test.
Test the watertight seal
Find a container large enough to submerge the case, such as your kitchen sink.
Fill the sink with water at least half full.
Place the case in the water and weigh it down with something handy, but not too heavy, such as a coffee mug full of water.
A few air bubbles may escape from the membrane covered sound holes.
Leave the case under water for an hour.
Take the weight off of the case and then remove the case from the water.
Shake off the excess water and look into case through the front window.
There should be no visible water drops inside although some minor condensation might appear if there is a significant difference in temperature between the water and the room.
If it looks dry inside, the case has passed the test.
If there is excessive water inside the case, open the case (following the instructions in the next section), then reassemble the case carefully and try the test again. If you are still having trouble obtaining a watertight seal, contact LifeSupport at www.lifeproof.com for possible solutions.
It is highly recommended that you understand the user manual and the instructional videos to ensure that you have the best experience possible with your LifeProof. This manual is organized to get you up and running quickly and give you confidence to take your iPhone just about anywhere you go. By reviewing the user manual and the instructional videos you will understand everything from installing your LifeProof to caring for it.
The user manual covers the following topics to help you get set up quickly and easily:
Package contents and introduction to the LifeProof case
Conducting the Water Test
Assembling the case
Testing the case to ensure a watertight seal
Installing your iPhone into the LifeProof case
Using the case features
Understanding the Four Proofs
Care and cleaning