Specifications

iPhone 4 Troubleshooting — Cleaning Procedures 24
2012-02-21
Receiver
1. Inspect the receiver for loose debris.
2. Use an anti-static brush to gently brush the cover mesh of the receiver to remove debris.
Avoid using large sweeping motions across the glass, as this could lead to scratches.
3. Use a micro-ber cloth to clean away the loosened debris.
Speaker and Microphone
Foreign material can cause audio performance issues, such as:
• Low or distorted speaker volume while playing music or during a hands-free call.
• Mued, low volume or distorted microphone.
1. Use an anti-static brush to gently brush the cover mesh of the microphone and/or speaker.
Do not cross over the dock connector to avoid brushing debris into the dock connector.
2. Use a micro-ber cloth to clean away the loosened debris.