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Provider: Pro-Logic Technologies, Kangari Building, Nairobi
The proximity sensor detects how close an object — typically the user's ear or face — is to the front of the phone. Its primary function is to turn off the touchscreen automatically when the phone is raised to the ear during a call, preventing accidental screen touches from a cheek or jaw. On iPhones with Face ID, the proximity sensor is integrated into the TrueDepth camera system. On most Android devices it sits as a small dedicated IR emitter and receiver module near the earpiece, either as a standalone component or combined with the ambient light sensor on a shared flex assembly.
Symptoms of Proximity Sensor Failure
- Screen stays on during phone calls — face or ear registers accidental touches that mute calls, end calls, or open apps mid-conversation
- Screen does not come back on after the phone is moved away from the ear
- Display turns off immediately when a call connects and never wakes up, even when the phone is held away from the face
- Sensor diagnostic apps show the proximity sensor as permanently triggered or permanently open
- Symptoms began after a screen replacement — a common cause, as the sensor connector was disturbed during the repair
Estimated Proximity Sensor Repair Costs in Nairobi (2024–2025)
| Device Category | Parts (KES) | Labour (KES) | Total Estimate (KES) |
|---|---|---|---|
| Budget Android (standalone sensor) | 200 – 600 | 500 – 900 | 700 – 1,500 |
| Mid-range Android (sensor + light sensor flex) | 400 – 1,200 | 600 – 1,100 | 1,000 – 2,300 |
| Samsung Galaxy A-series | 500 – 1,500 | 700 – 1,200 | 1,200 – 2,700 |
| Samsung Galaxy S-series (integrated assembly) | 800 – 2,500 | 900 – 1,500 | 1,700 – 4,000 |
| iPhone (6 through XR — standalone sensor) | 500 – 1,500 | 700 – 1,200 | 1,200 – 2,700 |
| iPhone X through 15 (TrueDepth integrated) | 3,500 – 12,000 | 1,500 – 2,500 | 5,000 – 14,500 |
On Face ID iPhones, the proximity sensor is part of the TrueDepth module. Its replacement carries the same Face ID implications as a full front camera swap — OEM parts are required to restore complete functionality.
Post-Screen-Replacement Checks
Proximity sensor failure is one of the most common issues reported after a third-party screen replacement. Before booking a separate sensor repair, confirm the screen flex cable is fully and correctly seated, and that the sensor aperture aligns properly with the cutout in the new screen. Realignment often resolves the issue without any additional cost.
Software Workaround
On Android devices, several call management apps can replace the proximity sensor's function with a timed screen timeout during calls. This is a temporary workaround while awaiting repair, not a long-term solution.
Pro-Logic Technologies at Kangari Building, Nairobi checks proximity sensor alignment as part of every screen replacement job — and offers standalone sensor repair when the component itself has failed.
