How to choose waterproof phone cases
Updated June 2026Independently researchedNo paid placement.
To choose a waterproof phone case for swimming, focus on the depth rating (look for IP68 certified for at least 10 meters or an ATM rating of 10 or higher), check for robust seals like double O‑rings, and consider ease of touchscreen use and a secure lanyard or armband. Always test the case with a paper towel inside before heading into the water.
What water resistance rating do I need for swimming?
Swimming involves sustained submersion, often to depths of a few feet. A standard IP68 rating means the phone can survive 1.5 meters for 30 minutes, fine for splashes but not real swimming. You need a case rated for at least 10 meters (or an ATM rating of 10 or higher). Many recreational swimming cases offer 10 m or 30 m ratings, which give you a comfortable safety margin for pool and open‑water use. Be aware that some brands use “water resistant” loosely. Look for clear depth claims in meters, not just an IP number. And remember: ratings assume fresh, clean water; salt water and chlorinated pools can degrade seals over time, so rinse the case thoroughly after each use.
How do I ensure the case stays watertight?
The seal is everything. Most quality cases use a thick silicone O‑ring or a gasket that you clamp shut with a latch. Before your first swim, always do a dry test: put a dry paper towel inside, close the case, submerge it for a few minutes, then open it to check for any dampness. Inspect the O‑ring for debris, nicks, or dryness before each use. Some manufacturers recommend lightly greasing the ring with the included silicone lubricant. Avoid over‑tightening, follow the case instructions for closing. And note that many cases have a pressure‑equalization valve: open that valve before diving deeper to prevent seal pop‑out.
Will I be able to use the touchscreen underwater?
Standard capacitive touchscreens don’t work reliably underwater because water conducts electricity and confuses the screen’s signal. Most waterproof cases rely on a flexible membrane that presses against the screen; you essentially push the membrane to make contact. This works for tapping and swiping, but with less precision than dry use. Some premium cases incorporate physical buttons for the camera shutter or volume keys, giving you direct control for taking photos while swimming. If you plan to shoot video or snap pictures underwater, look for a case with a dedicated camera button and a clear, anti‑fog window. Also, expect to use the phone’s physical buttons (if accessible) for volume or lock, on‑screen gestures are hit‑or-miss when submerged.
What about taking photos or videos while swimming?
The case’s lens window must be clear and scratch‑resistant. Look for tempered glass or hard polycarbonate panels. Some cases are designed with a raised bezel around the lens to reduce fogging and water beading. If you’ll be snorkeling or swimming at depth, consider a model that lets you attach a floating strap, losing a phone in open water is a real risk. For video, test audio through the case’s sealed mic port. Underwater, any sound captured will be muffled, but if you narrate above water or use an external waterproof mic, results improve. Some specialty swim cases have a built‑in audio port for a wired earbud, allowing you to listen to music while swimming.
How important is the lanyard or armband?
Very. A floating wristband or a secure neck lanyard gives you peace of mind if you drop the case in deep water. Cases that come with a detachable armband are great for lap swimming, they keep the phone out of your way and let you track distance or listen to audio. Make sure the attachment points are reinforced with plastic clips, not just flimsy fabric loops. If you swim in open water (lakes, ocean), choose a brightly colored case or lanyard so the phone is easy to spot. Some designs also have a reflective strip for low‑light visibility. And if you don’t want the phone dangling, look for a case that fits snugly in a swim cap pocket or an armband pouch.
Do waterproof cases add bulk or affect charging?
Yes, a protective waterproof case adds some thickness and weight, typically around 10–20 mm and a few extra ounces. That’s unavoidable for a submersion‑ready enclosure. Most cases seal off the charging port and headphone jack, so you’ll need to use wireless charging or open the case to charge. Some models include a small charging adapter that passes through the seal, but it adds a weak point. For day‑to‑day use, you may prefer a case that’s separate from your phone case, or simply take the phone out of the waterproof case when you’re not swimming. Many swimmers keep a waterproof case as a dedicated swim accessory and use a regular case for daily life.
Frequently asked questions
Can I use my phone’s fingerprint or Face ID with a waterproof case?
Generally no, underwater, optical fingerprint sensors and Face ID don’t work because water interferes with the IR scanner and the capacitive sensor. Some sealed cases have a membrane that allows Face ID to work above water, but not when submerged. Plan to use a passcode if you need to unlock while swimming.
Will a waterproof case protect my phone from chlorine or salt water?
Yes, as long as the seals are sound and the case is rinsed with fresh water after use. Salt and chlorine can be corrosive to rubber seals over time, so a quick freshwater rinse and gentle drying will extend the case’s life. Some cases are specifically rated for salt water, check the manufacturer’s guidance.
How often should I replace the O‑ring seal?
Inspect the O‑ring before every swim. Replace it annually or as soon as you see cracks, brittleness, or permanent compression marks. Many brands sell replacement O‑ring kits. A well‑maintained seal is the difference between a dry phone and a costly failure.
Can I use a waterproof phone case for snorkeling or diving?
It depends on the depth rating. Many swimming‑focused cases are rated only to 10–30 m; that’s fine for recreational snorkeling but not for scuba diving. For diving deeper than 30 m, you need a dedicated diving case or housing that’s tested to greater depths (often 60 m or more). Always stay well within the rated limit.
Are there waterproof cases that also float?
Yes, some cases include an air‑filled compartment or a foam insert that makes the entire case buoyant. This is especially useful in open‑water swimming or boating. If the case doesn’t float on its own, a separate floating lanyard or wrist strap can serve the same purpose.
Do I need a waterproof case if my phone is already water‑resistant (like iPhone or Samsung)?
Factory water resistance (IP67 or IP68) is for accidental splashes and brief submersion, not for active swimming. Chlorine and salt water wear down seals over time, and phone warranties often exclude water damage. A dedicated waterproof case gives you robust protection and peace of mind for intentional swimming use.