77621-31 Mobile IC for for iPhone 7 and 8 Series

77621 31 Audio IC for iPhone Logic Board Sound Repair

The 77621 31 Mobile IC is an original audio integrated circuit designed for repairing sound-related faults on iPhone logic boards. This chip plays a crucial role in processing audio input and output signals, enabling stable microphone and speaker communication. It is commonly used in iPhone 7, iPhone 7 Plus, iPhone 8, and iPhone 8 Plus models to fix audio codec, no sound, or mic not detecting issues. The 77621 31 IC ensures professional-grade signal clarity and circuit stability after replacement. Tested for performance, this IC is a must-have component for chip-level repair engineers and mobile technicians across India.

Features

• Original 77621 31 audio IC for iPhone logic board repair
• Fixes audio codec, mic not working, and no sound issues
• Compatible with iPhone 7, 7 Plus, 8, and 8 Plus
• Stable performance with excellent signal processing
• Supports chip-level reballing and replacement under microscope
• Built with durable silicon for long-term reliability
• Fully tested for professional repair and rework use
• Trusted by mobile repair engineers and refurbishing labs in India
• Installation should be done using a professional hot-air rework station under a microscope.

Benefits

• Repairs iPhone logic board sound and mic issues
• Restores speaker and receiver communication
• Solves “Audio IC” and “loop disease” symptoms on iPhone 7 / 8 boards
• Delivers stable signal processing and noise reduction
• Easy to install using rework station or hot air soldering
• Suitable for professional mobile technicians and service centers in India

Usage Tips

• Verify iPhone model and board compatibility before installation
• Use proper reballing stencil for precise placement
• Heat IC evenly with controlled air temperature to avoid pad damage
• Check continuity around C12 and L13 components before replacement
• Test audio, mic, and speaker post-installation before final assembly

Package Content

• 1 × 77621-31 IC

FAQs

• Q1. What is the 77621 31 Mobile IC used for
• It’s an audio IC responsible for sound signal processing in iPhone logic boards.
• Q2. Which models use this IC
• It’s compatible with iPhone 7, iPhone 7 Plus, iPhone 8, and iPhone 8 Plus.
• Q3. What issues does it fix
• It fixes no sound, mic not working, and “Audio IC loop disease” problems.
• Q4. Is it original or high copy
• This is an original quality OEM-grade IC, tested before dispatch.
• Q5. Can I install it manually
• Installation should be done using a professional hot-air rework station under a microscope.