Recreate the test consistently
Disconnect Bluetooth and play the same familiar spoken clip through the affected output at moderate volume. Compare it with the previous day’s result, not with a different song or maximum volume. Test the bottom loudspeaker and top receiver separately.
A consistent comparison reveals direction: quieter crackling and clearer speech support continuing recovery, while identical or worse distortion deserves reassessment.
A day is a checkpoint, not a guarantee
Drying time changes with liquid amount, submersion, airflow, case design and the cavity involved. Twenty-four hours can be enough for one exposure and insufficient for another. Avoid declaring the phone dry solely because a clock threshold passed.
Keep it in a stable, dry, ventilated place. Do not use heat, compressed air, rice or tools in the grille.
Review the liquid involved
Fresh water can leave temporary droplets. Pool water, sea water, milk and sweet drinks can leave chlorine, salt, proteins or sugar after evaporation. Persistent crackling after a contaminated exposure is therefore less likely to be solved by simply playing more sound.
Once the opening is dry, inspect it under bright light for surface residue without scraping. Apple’s speaker troubleshooting allows only gentle dry brushing for loose debris.
Decide whether one repeat is justified
A second controlled Water Eject sequence is reasonable only when the output works and the first sequence produced clear improvement. Position the opening downward, use a strong but comfortable level and stop after the defined run.
If earlier sequences made no difference, another cycle does not add a new mechanism. Stop for silence, a harsh mechanical rattle or worsening distortion.
Check the rest of the device
Look for repeated liquid alerts, unreliable charging, heat, unexpected restarts, display changes or camera fogging. These symptoms move the problem beyond a speaker cavity and should lower the threshold for professional assessment.
Do not reconnect a cable simply to see whether charging still works. Follow Apple’s wet-iPhone guidance.
Choose continued drying or service
Continue airflow and spaced checks when crackling is clearly trending better and no other symptoms exist. Arrange service when it is unchanged, worsening, recurring or linked to contaminated liquid. Save the exposure time and test trend for the technician.
The decision after 24 hours should be evidence-based: improvement supports patience; a flat or worsening pattern supports inspection.
Questions about iPhone speaker crackling after 24 hours
Can an iPhone speaker still be wet after 24 hours?+
Yes. Drying time varies with exposure, case, airflow and liquid location, but the direction of change should guide the next step.
Should I run Water Eject again?+
Only consider one controlled repeat if earlier playback clearly improved the same working output; unchanged results are a stopping signal.
Does crackling mean permanent damage?+
Not by itself. Moisture, residue, blockage and mechanical damage can sound similar, so compare trend and exposure details.
When should I book service?+
Book service for unchanged or worsening crackling, contaminated exposure, recurring symptoms or any additional device problem.