How to Fix Static on a Cell Phoneby Greyson Ferguson
When talking on your cell phone you may occasionally encounter static over the speaker. This crackling of the audio is extremely annoying, and can make it difficult to understand what the other party is saying. A few problems are usually to blame for this annoyance, most of which can be corrected at home easily and quickly.
Wipe the phone dry if you have been sweating. The sweat may enter the speaker (or headset) and create a crackling noise. You may need to wait for the device to dry before using it again.
Turn the phone off and leave it off if the phone has become excessively wet. You need to let the phone dry out to avoid any further damage. Leave it off for several hours. Even if the outside is dry it can take the inside of the phone a while to dry out.
Stand away from microwaves. The frequency of the microwave can affect phone service, causing harsh static on the speaker.
Move away from large metal devices. These objects can bounce around a signal and cause issues with the speaker and headset.
Take your phone to your wireless service provider if the speaker continues to crackle. There may be an issue with the speaker. The wireless service individuals can tell you if the speaker is damaged (typically either due to the excessive volume or water exposure).