OnePlus Ace 3 Pro Proximity Sensor Board

Does the screen on your OnePlus Ace 3 Pro (2024) not switch off during calls or is auto brightness misbehaving? The proximity sensor board is a small sub-board that can fail independently. With this replacement board you restore the call screen-off behavior and brightness sensor without bigger surgery.

Specifications

• Compatible with OnePlus Ace 3 Pro (PJX110)
• Type: proximity sensor sub-board with flex
• Includes ambient light sensor
• Snap connector to mainboard
• Identical fit to original
• Tested before shipment
• No soldering required

Symptoms of a defective part

• Screen does not switch off during calls
• Accidentally pressing buttons with your ear
• Auto brightness no longer works
• Screen reacts slowly to light or dark
• Screen brightness fluctuates randomly

Installation

🟡 Battery+cables — Difficulty: medium — Time: around 30 minutes. Tools: Phillips screwdriver, heat gun or hair dryer, plastic opening pick, suction cup, tweezers.

Frequently asked questions

Will screen-off during calls work again?
Yes, this board has the same proximity sensor as the original and restores that function.

Do I need to calibrate after installation?
In most cases no. A restart lets the system re-initialize the sensor.

Will this board work in other OnePlus models?
No, it is specifically for the OnePlus Ace 3 Pro (PJX110). Other models have different connector positions.