IP68 and IP67 Water Resistance Explained: What Your Smartphone Can Really Handle

IP68 and IP67 water resistance is often seen by smartphone owners as a guarantee that their devices are nearly invulnerable to water. Advertisements show phones being dropped into pools, washed under the tap, or used in the pouring rain with zero consequences. Yet in real life, a trip to the beach or an accidental drop in the bathtub can end in expensive repairs - with service centers commonly refusing warranty coverage. In this article, we'll explain what IP water protection standards really mean, where their limits lie, and why manufacturers never take responsibility for "drowned" devices.

What do the numbers in IP water resistance standards mean?

The IP (Ingress Protection) code is an international standard that rates how well electronic devices are protected against solid particles and liquids entering the enclosure.

The first digit after "IP" indicates the level of protection against dust and small particles. For most modern flagship and mid-range smartphones, this digit is 6 - the highest level, meaning total dustproofing even during prolonged exposure to sand or dirt.

The second digit specifies the degree of water resistance and determines how you can use the device. A 6 means protection from powerful water jets; 7 and 8 allow for immersion. However, certification is performed in strict lab conditions: only pure fresh water is used, and the device is kept still, with no pressure changes.

What's the difference between IP67 and IP68 water resistance?

The key difference between IP67 and IP68 is the depth of immersion the device can safely withstand. The safe immersion time for both is identical - 30 minutes according to testing regulations. The difference lies only in the pressure the device can withstand without losing its watertight seal.

Devices with IP67 are designed for brief immersion up to a maximum depth of 1 meter. This level is enough to survive accidental drops in puddles, sinks, or bathtubs - provided you retrieve and dry the phone quickly.

IP68 means the device can go deeper than 1 meter, but the exact limit is set by each manufacturer. For example, basic Android flagships usually handle 1.5 meters, while the latest iPhones are certified for up to 6 meters. Still, even with IP68, your phone is not a substitute for a true action camera during underwater adventures.

How does water protection work in modern smartphones?

Device sealing is achieved through a combination of physical barriers. As the body isn't a single block of metal or glass, all joints between the screen, back, and frame are glued with industrial adhesive - a dense, double-sided sticky profile that blocks direct liquid access to the motherboard.

Openings like speaker grills and microphones are protected by special polymer meshes with microscopic pores. Thanks to water's surface tension, droplets can't penetrate this barrier. Around volume buttons and charging ports, silicone O-rings tightly seal the internal components.

For years, the SIM tray was a weak point, requiring a perfect rubber gasket. Manufacturers now reduce physical openings to improve water resistance. That's why many are eliminating traditional SIM cards - as detailed in the article What is eSIM: Pros, Cons, and Supported Devices in 2025.

Can you swim or take photos underwater with your phone?

Technically, IP68-rated devices can survive immersion, but swimming with your phone is always a gamble. The problem is the difference between static and dynamic pressure. In labs, the phone is gently lowered into still water. But when you jump into a pool or swing your arm for an underwater shot, the hydrodynamic pressure on the case multiplies. For seals, this shock is equivalent to diving dozens of meters deep, potentially breaching protection and flooding the motherboard instantly.

The dangers of chlorine, soap, and saltwater

IP standards are tested only in pure fresh water. In reality, liquids have complex chemical compositions that can damage electronics and adhesives. Chlorine in pools reacts with silicone gaskets, making them brittle after just a few swims. Saltwater is doubly dangerous: salt accelerates corrosion of charging port contacts. When it dries inside speakers, salt crystals can tear protective meshes. Even showering is risky, as soaps and shampoos reduce water's surface tension, making "soapy" liquids seep through microscopic holes that would otherwise repel pure water droplets.

Why doesn't the warranty cover water damage?

No major smartphone manufacturer repairs "waterlogged" devices under the standard warranty. Official documentation describes water resistance only as protection against accidents, not as a basic feature for underwater photography. The IP certificate guarantees the device was sealed when it left the factory, but this feature inevitably fades over time.

Liquid Damage Indicators (LDI) and natural wear

To swiftly identify causes of failure, engineers place liquid contact indicators (LDI or LCI) inside the case. These tiny white stickers are hidden inside the charging port, near the SIM tray, and on ribbon cables. If exposed to water, they turn red irreversibly. If a service technician sees a red sticker, free repairs are denied on the spot.

Even with perfect care, seals deteriorate naturally. Daily heating from a powerful processor, charging, and sunlight dries out the internal adhesive. Carrying your phone in tight pockets creates micro-deformations, causing invisible gaps between the screen and frame. Just as batteries gradually degrade (read more in Why Batteries Age Even When Not in Use: The Science Explained), sealing rings lose elasticity. After a year, your phone's original water resistance may be reduced to basic splash protection.

Conclusion

The numbers 67 and 68 on your smartphone's specs indicate high build quality, not a license for deep-sea diving. Water resistance does its intended job: it protects against accidents like spilled coffee, sudden rain, or a tumble into a snowbank. But deliberate swimming in the sea or pool is always a huge risk - one that falls entirely on the owner. For underwater photos, it's far safer and cheaper to buy a dedicated waterproof case or action camera, leaving your expensive smartphone dry on shore.

FAQ

1. What should I do if my IP68 phone falls into water?

   Immediately retrieve the device and power it off. Wipe the exterior thoroughly with a soft, lint-free cloth. Gently tap the phone (charging port facing downward) against your hand to dislodge any trapped droplets. Leave the device to dry in a well-ventilated area at room temperature. Never plug in a charging cable for several hours - current can instantly cause a short circuit on wet contacts.

2. Does putting a wet phone in rice really help dry it?

   This is one of the oldest and most harmful tech myths. Rice does absorb moisture, but far too slowly to prevent corrosion on the motherboard. Worse, starch dust and debris can clog ports and speaker meshes, mixing with water and forming a stubborn paste. To speed up drying, use silica gel packets or simply leave the device in a dry place with good air circulation.

3. Is water resistance restored after screen or battery repairs?

   It depends on the service center's quality. Authorized workshops completely remove the old sealant, apply new original waterproof adhesives, and clamp the phone in a special press. Factory-level sealing can be restored this way. However, unofficial repair shops often use generic glue on screens and covers. After any non-official disassembly, you should treat your phone as if it no longer has any water protection at all.