When water gets into a phone speaker, you hear it immediately — everything goes muffled. Water in the microphone is sneakier: your phone sounds fine to you, but everyone you call says you sound distant, quiet, or as if you are speaking through a wall. Voice notes come out faint, video sound is muffled, and voice assistants start mishearing you. The microphone hole is tiny, but it is just as exposed as the speaker, and it needs the same calm, patient drying — with a few differences of its own.

Where the microphones are — and why there is more than one

Most modern phones have several microphones, not one. There is usually a main microphone on the bottom edge near the charging port, used for calls and voice recordings; one near the top or the camera, used for video and noise cancellation; and the earpiece area can house another for calls. That is why water in the microphone does not always affect everything equally: a call on speakerphone may sound fine while a normal handset call is muffled, or a video may pick up sound perfectly while a voice memo does not. The pattern tells you which microphone got wet.

Look for the tiny pinhole openings on the bottom edge, the top edge, and around the camera module. Do not confuse them with the speaker grille, which is a row of larger holes, or with the SIM tray. The microphone holes are small, which is exactly why a single droplet can block one: surface tension holds the water across the hole, and your voice cannot get through properly until it clears.

The symptoms of a wet microphone

The classic signs are all on the other person’s side of the call. People ask you to repeat yourself, say you sound far away, or say your voice keeps cutting in and out. Your own speaker sounds normal, music plays fine, and the phone shows no error — which is why a wet microphone is often mistaken for a network problem. Check whether the problem follows a pattern: if speakerphone calls are clear but handset calls are muffled, the bottom microphone is the likely culprit; if videos are muffled but calls are fine, the top or camera microphone may be the wet one.

A quick test settles it. Record a short voice memo in a quiet room, speaking at normal volume, then play it back. Then record a short video and play that back too. If one is clear and the other is muffled, you have narrowed it down to one microphone. Our phone microphone test guide walks through a fuller set of checks, including testing each microphone separately.

Dry it: gravity, air, and patience

The drying routine for a microphone is gentler than for a speaker, because the hole is smaller and the membrane behind it is delicate. Start by removing the case — cases often cover or partly cover a microphone hole, and a wet case can hold moisture against it. Wipe the phone dry, then hold it with the affected microphone hole pointing down and tap the phone very gently against your palm a few times. You are encouraging a droplet to fall out, not shaking the phone hard.

Then leave the phone in a dry, ventilated spot, microphone-side down on a clean cloth, and give it time — several hours at least, overnight after a proper dunking. Do not use a hair dryer: hot air can damage the microphone membrane and push moisture further in. Do not blow hard into the hole, and do not use compressed air at close range, which can force water past the mesh and damage the membrane. A soft, dry brush across the opening can clear surface debris once the phone is dry, but never poke the hole with a pin, needle or SIM ejector — puncturing the mesh turns a drying job into a repair.

A speaker-cleaner tone can help indirectly — the vibration can shake water from the speaker grille — but be honest about its limits: the tone drives the speaker, not the microphone, so it is not a direct fix for a wet mic. It is worth one short run if the speaker is also muffled, as in our guide to getting water out of a phone speaker, but the real cure for the microphone is drying time, not more noise. Silica gel packets in a sealed container can help if you have them; a bowl of rice does very little and can add dust, so skip it, as our guide to whether rice fixes a wet phone explains.

Rule out the easy impostors

Not every muffled call is a wet microphone. Before you wait a day for drying, check the impostors, which take a minute each:

• The case. A case that has shifted, or a screen protector that overlaps the microphone hole, can muffle calls exactly like water. Test a call with the case off.
• Bluetooth. If a Bluetooth earbud, car stereo or smartwatch is connected, the phone may be using its microphone instead of the phone’s. Turn Bluetooth off and retest.
• A blocked hole. Pocket lint and dried liquid can block a microphone hole without any water being involved. A gentle brush once dry is the safe fix; never scrape at it with anything sharp.
• App permissions and settings. Check that the app you are using has microphone permission, and that no “noise suppression” or voice-isolation setting is over-processing your voice. Try the same test in the built-in voice recorder, which removes the app from the equation.

If the phone was dropped in salt water, pool water or soapy water, treat it with more urgency than a fresh-water splash: residue and corrosion are the long-term risk, not just the droplet. Follow the same drying steps promptly, and read our salt water guide and our first-aid guide for a dropped phone if the phone was submerged. Do not charge the phone until the charging port is dry — if you see a moisture warning, our guide to liquid detected in the connector explains the wait.

Retest properly before you call it fixed

A microphone that sounds fine for one call can go muffled again as moisture moves, so retest after a full drying period, not after an hour. Record a voice memo, record a video, and make a real call — all three, because they can use different microphones. Speak at normal volume in a quiet room, and ask the person on the call to be honest about how you sound. If all three are clear the next morning, the microphone has dried. If one is still muffled, give it another day; microphones can take longer than speakers to clear because the hole is so small and the airflow is so limited.

If the phone also has a wet speaker, dry both together: speaker-side down, case off, overnight, and retest both in the morning. Our guide to ejecting water from an iPhone speaker and our Samsung moisture warning guide cover the speaker and port side of the same accident.

When to get help

Book a repair if the microphone is still muffled or silent after two full days of drying, if it crackles or cuts out even when dry, or if the phone has other water symptoms — charging faults, a speaker that stays distorted, or corrosion visible around the port. A water-damaged microphone membrane or corroded contact cannot be dried back to life, and a repair shop can test each microphone and replace the faulty one. Tell them what liquid was involved and how long the phone was wet; salt water and pool water change how urgently corrosion needs checking.

Frequently Asked Questions

How do I know if water is in my phone microphone?
Other people say you sound distant or muffled, while your own speaker sounds normal. Record a voice memo and a video: if one is clear and the other is muffled, the microphone used for the muffled one is likely wet or blocked.

Can a speaker cleaner tone fix a wet microphone?
Not directly. The tone drives the speaker, not the microphone. It can help if the speaker is wet too, but a wet microphone needs drying time — gravity, ventilation, and patience — rather than more sound.

How long does a wet phone microphone take to dry?
Several hours for a splash, and up to a full day or two after submersion. Leave the phone microphone-side down in a dry, ventilated spot, case off, and retest the next morning.

Can I use a hair dryer or compressed air on a wet microphone?
No. Hot air can damage the delicate microphone membrane, and close-range compressed air can force water deeper. Gentle tapping, gravity, and air drying are the safe methods.

Why do people hear me fine on speakerphone but not on normal calls?
Different microphones are used for different modes. Speakerphone often uses a different microphone from a handset call, so one being wet and the other dry explains the difference exactly.

Will water in the microphone damage my phone permanently?
Usually not, if it is fresh water and the phone dries fully. Salt water, pool water and soapy water carry a higher corrosion risk, so dry the phone promptly and get it checked if the microphone stays muffled after two days.

Try it now

Case off, microphone hole down, gentle tap, then leave it alone to dry — and retest with a voice memo and a real call in the morning. If the speaker is wet too, run the free speaker cleaner for the speaker, then give both the drying time they need.