Light Sensor and Power Button iPhone 4S Assembled

The Light Sensor and Power Button iPhone 4S Assembled is the upper flex cable of the iPhone 4S supplied pre-assembled: it combines the ambient light and proximity sensor, the power button contact and its bracket, together with the speaker, in a single ready-to-install part. It sits at the top of the phone and handles power/standby, automatic brightness and turning the screen off during calls.

Replacement is needed when the power button does not respond or has to be pressed several times, the screen does not turn off when you hold the phone to your ear during a call, auto-brightness no longer works, or after oxidation or a drop that damaged the upper flex.

Main features

• Type: assembled light sensor, proximity sensor and power button flex
• Pre-assembled parts: speaker, sensor, power button bracket
• P/N code: 921-0216-02
• Item code: 4S.SENS.RF
• Installation: medium difficulty
• Quality: compatible spare part, not original Apple
• Quality control: QC Passed

iPhone 4S Light Sensor and Power Button Replacement

Since it comes pre-assembled, this part cuts repair time and avoids moving the individual components from the old flex. Replacing the light sensor and power button flex on your iPhone 4S restores power button, proximity sensor and auto-brightness in a single repair.

Light Sensor and Power Flex Spare Part for iPhone 4S

Suitable for both personal use and service centers or repair technicians, every part is individually checked before shipping. Discover all the details of this spare part

Compatibility

• Compatible with: iPhone 4S (A1387, A1431)
• Storage sizes: 8 GB, 16 GB, 32 GB, 64 GB
• Not compatible with: iPhone 4 (A1332, A1349), iPhone 5 and later models

Package contents

1 x Light Sensor and Power Button iPhone 4S Assembled

No other accessories or installation tools are included.

Installation note

Always disconnect the battery connector before starting. The upper flex runs close to the power button and front camera: lift it gently without bending it, align the power button bracket correctly and test power button, proximity sensor (during a call) and auto-brightness before closing the device.

Certifications and warranty

Every part passes QC Passed quality control before shipping and is covered by the legal guarantee of conformity under Italian Legislative Decree 206/05 (Consumer Code). Warranty replacement is available for functional defects, provided the part has not been damaged by incorrect installation, impacts or tampering. Images are for illustration purposes.

Official documentation

If you are unsure about your iPhone model, you can check the official Apple website.

For detailed information on warranty, returns and purchase conditions, please see our Terms of sale.

Note: the trademarks mentioned belong to their respective owners and are used only to identify the compatibility of the spare part. There is no affiliation with Apple Inc.