Mobile Sensor Problem Solution: Proximity, Fingerprint & Rotation Fix | Lesson 27

Team Tekno World ke free mobile repairing course mein aapka swagat hai! Main hoon Rakesh Chauhan, aur yeh humara Lesson 27 hai.

Aaj hum baat karenge Mobile Sensor Problem Solution ke baare mein.

Mobile Sensor Problem Solution

Sensors mobile ka “Nervous System” hote hain.

Grahak ki 3 sabse badi shikayatein:

1. Proximity: “Call lagate hi screen kaali pad jaati hai, call katne tak on nahi hoti.”
2. Fingerprint: “Fingerprint kaam nahi kar raha ya option hi gayab hai.”
3. Rotation: “YouTube/PUBG mein screen ghoom (Rotate) nahi rahi.”

Step 1: Proximity Sensor (Call Screen Black Problem)

Yeh sensor receiver (kaan wale speaker) ke paas hota hai.

Problem: Call connect hote hi screen OFF ho jaati hai (bina kaan par lagaye).

Asli Wajah: “Kaala Rubber” (Sensor Boot/Gasket) ka gum hona.

• Logic: Proximity sensor mein ek Emitter (IR Bulb) aur ek Receiver hota hai. In dono ke beech ek diwaar (Rubber) honi chahiye. Jab aap folder (combo) badalte hain, toh purana rubber nikalna bhool jaate hain. Bina rubber ke, light andar hi andar leak hokar receiver par padti hai, aur sensor ko lagta hai ki phone kaan par laga hai.
• Solution:
  1. Phone kholein.
  2. Purane toote hue folder se wo Chota Kaala Rubber nikaalein aur naye folder mein sensor wali jagah lagayein.
  3. Agar rubber gum gaya hai, toh Black Tape ka tukda lagakar emitter aur receiver ke beech partition bana dein.

Step 2: Sensor Calibration (Software Check)

Agar rubber laga hai fir bhi dikkat hai, toh calibration karein.

• Test Code: Dial *#0*# (Samsung) ya *#*#6484#*#* (Xiaomi/Redmi).
• Proximity Test: Sensor par haath rakhein.
  • Pass: Screen ka rang Green/Black hona chahiye aur value 0 se 5.0 honi chahiye.
  • Fail: Agar value change nahi ho rahi, toh sensor kharab hai.

Step 3: Fingerprint Sensor (Hardware Not Available)

Type A: Physical Fingerprint (Peeche ya Side mein)

• Fault: “Fingerprint Hardware Not Available”.
• Fix:
  1. Phone girne se patta (Flex) nikal jaata hai. Re-connect karein.
  2. Check: Fingerprint connector par 1.8V aur 2.8V/3.0V check karein. Agar voltage nahi hai, toh Power IC fault hai.

Type B: In-Display Fingerprint (Screen ke andar)

• Fault: Finger add nahi ho raha.
• Reason: Ghatiya quality ka Folder (Copy Combo).
• Logic: In-display fingerprint ek camera hota hai jo screen ke neeche se photo kheenchna chahta hai. Agar aapne sasta folder lagaya hai (jo transparent nahi hai), toh sensor kaam nahi karega. Iska koi hardware solution nahi hai, sirf Original AMOLED Folder lagana padega.

Step 4: Auto-Rotate (Gyroscope/Accelerometer)

Agar phone ghumane par screen nahi ghoom rahi:

• Fault: Accelerometer IC (6-Leg Glass IC) kaam nahi kar rahi.
• Reason: Phone girne se iske neeche ke balls toot jaate hain.
• Fix: Yeh IC CPU ke paas hoti hai. Ise halka sa Heat (Reflow) karein ya Reball karein. 90% cases mein yeh chal jaati hai.

Summary Checklist

1. Black Screen on Call: Sensor ka Rubber zaroor lagayein.
2. Fingerprint Error: Connector aur Voltage (1.8V) check karein.
3. In-Display Fingerprint: Copy folder mein kaam nahi karega.
4. Rotation: Gyro IC ko reflow karein.

💡 Aaj Ka Aapka Task – Lesson 27 (Comments & Forum)

1. Practical: Apne phone mein *#0*# ya Engineering Mode kholkar “Sensor” section check karein. Dekhein kaise phone hilane par X, Y, Z ki values badalti hain.
2. Comment (नीचे): Kya aapne kabhi In-Display Fingerprint wala folder change kiya hai? Kya usmein fingerprint chala? Yes/No likhein.
3. Forum: Agar Proximity sensor ka rubber kho gaya hai, toh “Jugaad Solution” ki photo Forum (forum.teamtw.in) par share karein.

Agla Lesson: Sensors ka kaam to ho gaye! Ab hum chalenge “ Combo / Folder Replace“ ki taraf. To Humara Agla lesson hoga: “Lesson 28: Mobile Phone Combo/Folder Replace: Professional Fitting & Pasting Guide”।