What do the two digits in an IP rating mean?
The two digits in an IP rating grade two separate things: the first digit rates protection against solid objects and dust on a scale of 0 to 6, and the second rates protection against water on a scale of 0 to 9. The scale comes from IEC 60529, an international standard published by the International Electrotechnical Commission, so an IP rating means the same thing regardless of brand.
For the first digit, 5 means dust-protected (some dust may enter but not enough to interfere with operation) and 6 means fully dust-tight. Nearly every phone advertising an IP rating today carries a 6 as its first digit. For the second digit, 7 means the device survived immersion up to 1 meter for 30 minutes, and 8 means it survived continuous immersion deeper than 1 meter under manufacturer-defined conditions.
When you see an X in place of a digit, as in IPX7, it means the device was not tested for that category, not that it failed. A phone rated IPX7 has proven water protection but makes no formal claim about dust.
IP67 vs IP68: what is the concrete difference?
The concrete difference is depth and duration of water immersion: IP67 certifies survival in up to 1 meter of still fresh water for 30 minutes, while IP68 certifies survival deeper than 1 meter, with the exact depth and time set by the manufacturer. Both ratings share the same 6 for complete dust-tightness, so the dust protection is identical.
Because IP68 lets the manufacturer choose the test conditions beyond the 1-meter floor, two IP68 phones are not necessarily equal. One maker may certify 1.5 meters for 30 minutes while another certifies 6 meters for 30 minutes; both are legitimately IP68. The fine print on the manufacturer's specification page tells you the actual tested depth.
In everyday terms, the difference rarely matters. Both ratings comfortably cover rain, splashes, spilled drinks, and an accidental drop into a sink or shallow pool, provided the phone is fished out promptly. Neither rating is an invitation to take underwater photos on vacation.
Why is an IP rating not a waterproof guarantee?
An IP rating is not a waterproof guarantee because it certifies performance in a controlled laboratory test, on a brand-new unit, in still fresh water at moderate temperature, and real life violates every one of those conditions. Water resistance is a snapshot of a new device under ideal circumstances, not a permanent property of your phone.
Several real-world factors fall outside the test envelope entirely.
- Salt water and chlorinated pool water are more corrosive and conductive than the fresh water used in testing.
- Soap, shampoo, and detergents lower water's surface tension, helping it creep past seals that plain water cannot.
- Moving water, jumping into a pool, or a strong faucet jet creates pressure well above a still 1-meter immersion.
- Rubber gaskets and adhesive seals degrade with age, heat cycles, and everyday flexing of the chassis.
- Any drop, crack, bend, or prior repair can compromise the seals without visible evidence.
- Hot water and steam, such as a shower or sauna, stress adhesives and can drive vapor past seals.
Does warranty cover water damage on an IP-rated phone?
In general, no: major manufacturers, including those selling IP68-rated flagships, explicitly exclude liquid damage from their standard warranties. The IP rating describes how the phone performed in certification testing; the warranty document is where legal obligations live, and the two say very different things.
Most phones contain liquid contact indicators, small stickers inside the SIM tray or ports that permanently change color when wet. If a technician finds a triggered indicator, a warranty claim for almost any fault can be denied as liquid damage. Some extended protection plans and accidental damage coverage do include liquids, but that is separate paid coverage, not the standard warranty.
The practical takeaway is to treat the IP rating as an emergency margin, not a feature to use. It exists so that rain or a dropped phone in the sink is a non-event, not so you can bring your phone into the pool.
Which phones actually carry IP68 ratings?
IP68 has been standard on mainstream flagships for years: recent iPhone models, Samsung's Galaxy S series, and Google's Pixel flagships all carry IP68 ratings, and many upper-midrange phones now do as well. Budget phones increasingly offer lower ratings like IP54, which covers splashes but not immersion.
Always check the specification sheet for your exact model rather than assuming by brand, because ratings vary within a lineup. A flagship may be IP68 while the budget model in the same family has no rating at all, and manufacturer-specified IP68 depths differ from maker to maker and generation to generation.
Folding phones deserve special mention: their moving hinges have historically made dust-tightness hard to achieve, so many carry water-only ratings such as IPX8. That means tested water immersion but no certified dust protection.
How can you prevent water damage in practice?
The most effective prevention is simple physical separation: use a sealed waterproof pouch for beaches, pools, boats, and kayaking, and keep the phone out of bathrooms while you shower. A few dollars of transparent pouch preserves touchscreen use while removing all risk, and it does not age the way a phone's internal seals do.
Heat and steam are underrated enemies. Leaving a phone in a hot car, on a sunny towel, or in a steamy bathroom softens the adhesives that form its water seals, quietly reducing the resistance the phone had when new. Charging a phone that might be wet is also risky; moisture in the charging port plus current is how ports corrode.
If your phone does get wet, rinse it briefly with fresh water only if it was exposed to salt or chlorine, dry the exterior, and leave it powered down and charging-free until fully dry. Skip the rice myth; still air and time do the actual work.
What should you do about the speakers after water exposure?
After any water exposure, check the speakers first, because the speaker grille is an intentional opening in the chassis and the most common place for water to linger even when the seals held. Trapped droplets make audio sound muffled or crackly and, if left, can dry into mineral deposits on the mesh.
A quick left/right speaker sound test tells you immediately whether audio is degraded. If it sounds muffled, run a low-frequency water eject sweep with the speaker facing down to push loose droplets out of the grille; Speaker Water Eject offers both tests free in the browser with nothing to install. This clears the speaker cavity, though it cannot fix water that has traveled deeper into the device.
Recheck the sound after a few hours of air drying. Clear audio and normal charging behavior are good signs the exposure was harmless; persistent muffling, static, or heat during charging are reasons to get the device inspected.