If your phone’s touchscreen suddenly freezes only during calls, you’re not alone. This annoying issue happens on many Android devices — Samsung, Tecno, Infinix, Xiaomi, and even older phones like the Galaxy J series.
The good news?
This problem is usually caused by 5 common issues, and all of them can be fixed without spending money.
In this guide, you’ll learn:
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Why your screen becomes unresponsive ONLY when you're on a call
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How to fix proximity sensor problems
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How to stop apps from interfering with call UI
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How to reset hidden call settings
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When it’s a hardware problem
Why the Touchscreen Freezes Only During Calls
1. Proximity Sensor Miscalibration
The proximity sensor automatically turns off your screen when your phone is near your ear.
If it gets dirty, misaligned, or blocked, it may:
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Keep the screen off
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Ignore your touch
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Freeze the call screen
👉 This is the most common cause.
2. Screen Protector Interference
Some thick or low-quality screen guards block the sensor area, especially on Tecno, Infinix, Oppo, and Redmi models.
The phone thinks it’s still against your ear — even when it’s not.
3. Phone UI or Dialer App Glitch
If your dialer app crashes or lags, the screen may freeze during:
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Incoming calls
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Outgoing calls
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Toggling loudspeaker
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Ending calls
This commonly happens after a software update.
4. Background Apps Interfering
Certain apps can cause call-screen lag, including:
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Call recorder apps
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Screen overlay apps
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Floating bubble apps
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Battery savers
These apps can freeze your call UI until the call ends.
Some glitches are similar to bugs covered in How to Configure Your Phone for Faster Performance
5. Hardware Proximity Sensor Damage
If you dropped your phone or the top bezel is cracked, the sensor may be physically damaged.
If your touchscreen behaves strangely, also check Touchscreen Not Responding? 10 Fixes You Should Try
How to Fix a Touchscreen That Freezes During Calls
Try the solutions in the correct order for best results.
✅ Fix 1: Clean the Proximity Sensor Area
Use a clean microfiber cloth to wipe around the:
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Front camera
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Top bezel
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Earpiece area
Even dust can confuse the sensor.
✅ Fix 2: Remove Screen Protector Temporarily
Remove the protector and test a call.
If everything works:
➡️ Replace it with a thin tempered glass compatible with your phone model.
✅ Fix 3: Recalibrate Proximity Sensor (Hidden Menu)
Dial:
or on some phones:
Look for Proximity Sensor Test → Run calibration.
If your phone doesn’t support these codes, use this method:
Settings → Apps → Phone (Dialer) → Storage → Clear Cache
Clearing cache often solves similar issues discussed in How to Fix Mobile Data That Works Only on Certain Apps
✅ Fix 4: Disable Apps That Might Interfere
Uninstall or disable apps like:
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Call recorders
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Floating chat bubbles
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Battery saver apps
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Custom dialer/phone apps
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Third-party screen dimmers
✅ Fix 5: Reset Call Settings
Go to:
Settings → System → Reset Options → Reset Wi-Fi, Mobile & Bluetooth
This refreshes:
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Call UI
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Network settings
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Audio routing
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Sensor behavior
This does not delete your files.
Resetting settings also improves network performance as explained in How to Boost 4G/5G Speeds Without Any Booster App
✅ Fix 6: Update or Roll Back Phone App
Go to:
Play Store → Phone by Google → Update
If the issue started after an update:
Uninstall updates → Restart phone
When It’s a Hardware Problem
If the screen still freezes:
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The sensor might be damaged
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A repair technician should diagnose it
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Replacing the proximity sensor module is cheap on most phones
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