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Provider: Pro-Logic Technologies, Kangari Building, Nairobi
While the IR blaster sends infrared signals, the IR sensor receives them. On most smartphones, the proximity sensor doubles as an IR receiver — detecting whether the phone is held against your ear during a call so the screen dims and prevents accidental touches. Some devices use dedicated IR sensors for face unlock and depth sensing. Either way, when this component fails, the consequences are noticeable.
What Is a Phone IR Sensor?
An IR sensor detects incoming infrared light. In smartphones it serves two primary functions: proximity detection (turning off the screen during calls) and, in some flagship models, facial recognition and 3D depth mapping. It sits on the front face of the device, usually alongside the earpiece.
Common Causes of IR Sensor Failure
- Screen replacement gone wrong — improper reassembly during a display repair can dislodge or damage the sensor ribbon
- Water damage — moisture behind the screen affects sensor accuracy
- Physical impact — cracks near the earpiece area can crack the sensor itself
- Calibration drift — sensor readings can become inaccurate without physical damage, addressable through software recalibration
Repair vs. Replacement: What to Expect
At Pro-Logic Technologies, the technician first checks whether the issue is a displaced connector or a physically damaged sensor. Reconnecting a loose ribbon cable is a quick fix; replacing the sensor component requires more involved work.
Estimated costs in Nairobi:
| Repair Type | Approximate Cost (KES) |
|---|---|
| Diagnosis / assessment | 500 – 1,000 |
| Ribbon cable reconnection | 1,000 – 2,500 |
| IR sensor component replacement | 2,500 – 6,000 |
| Front camera / sensor module replacement | 4,000 – 12,000 |
Turnaround Time
Connector reseating can be done same-day. Full sensor replacement typically takes one to two business days.
Should You Repair or Replace Your Phone?
A non-functional proximity sensor that keeps your screen on during calls is a significant daily inconvenience. At these price points, repair is almost always the right call for a phone in otherwise good condition.
Pro-Logic Technologies handles IR sensor repairs for all major brands at Kangari Building, Nairobi. Walk in for a free initial assessment.
