Product Name: iPhone 13 Series Bottom Loudspeaker Flex Cable Assembly

Compatibility: iPhone 13

Replace this assembly to resolve issues specifically with the bottom loudspeaker, such as:
No sound, severely distorted audio, or crackling from the bottom speaker during media playback, ringtones, or speakerphone calls
Noticeably reduced maximum volume or complete lack of bass response.
Rattling or buzzing sounds at certain frequencies.
Physical damage to the speaker mesh, dust cover, or internal coil.

Professional installation is highly recommended.
After installation, you must thoroughly test:
Audio Playback Test: Play a track with a wide frequency range (highs, mids, lows) to check for clarity, fullness, and absence of distortion or rattling.
Volume Stress Test: Gradually increase volume to maximum to ensure the speaker handles peak output without cutting out, cracking, or causing protective shutdowns.
Stereo Balance Test: Play a stereo test track to compare output with the earpiece (top) speaker, ensuring balanced left/right channels and proper stereo imaging.
Functionality Test: Test the speaker in real-world scenarios like speakerphone calls, alarm sounds, and Siri responses.

Quality & Warranty Promise
Every speaker assembly is tested for frequency response, impedance, and maximum output power before shipment. We ensure there is no coil rub or pre-existing damage.
This product is backed by a 90-day warranty from the delivery date. If the item fails due to non-human causes (not from installation error, liquid damage, or physical impact), we provide a free replacement. Please inspect the part upon receipt and contact us with any issues.