Samsung Galaxy Note 4 - Manual (Page 175)

Troubleshooting
175
The touchscreen responds slowly or improperly
• If you attach a protective cover or optional accessories to the touchscreen, the
touchscreen may not function properly.
• If you are wearing gloves, if your hands are not clean while touching the touchscreen,
or if you tap the screen with sharp objects or your fingertips, the touchscreen may
malfunction.
• The touchscreen may malfunction in humid conditions or when exposed to water.
• Restart your device to clear any temporary software bugs.
• Ensure that your device software is updated to the latest version.
• If the touchscreen is scratched or damaged, visit a Samsung Service Centre.
Your device freezes or has fatal errors
If your device freezes or hangs, you may need to close apps or reinsert the battery and turn
on the device to regain functionality. If your device is frozen and unresponsive, press and hold
the Power key and the Volume key down simultaneously for more than 7 seconds to restart it.
If this does not solve the problem, perform a factory data reset. On the All apps screen, tap
Settings
→ Backup and reset → Factory data reset → Reset device → Erase everything.
Before performing the factory data reset, remember to make backup copies of all important
data stored in the device.
If the problem is still not resolved, contact a Samsung Service Centre.
Calls are not connected
• Ensure that you have accessed the right cellular network.
• Ensure that you have not set call barring for the phone number you are dialing.
• Ensure that you have not set call barring for the incoming phone number.
Others cannot hear you speaking on a call
• Ensure that you are not covering the built-in microphone.
• Ensure that the microphone is close to your mouth.
• If using a headset, ensure that it is properly connected.