Mobile device doesn't ring (No ringing from calls (phone))

Maybe your device doesn't ring because of the Airplane mode. If you don't see the signal strength, nor the operator's name in the upper-left corner of the screen, but you see a small airplane icon, the airplane mode is enabled.

See the don't know how to enable/disable the Airplane mode guide if you are not sure how to disable this mode.

If your iPhone doesn't ring, but you receive notifications in your voicemail that somebody called you, it's possible that you have enabled the Do Not Disturb option. If you see a half-moon icon next to the battery icon, this option is enabled.

You can disable this option via the Action Center or via Settings:

• Via the Action Center:
  
  Swipe up from the lower part of the screen and tap the half-moon icon.
  
  

  
  
  

• Via Settings:
  
  Go to Settings -> Tap Do Not Disturb -> Move the switch next to Manual to the left.
  
  

     

Maybe your device is in silent mode. All you have to do is to disable it. You can do that in several ways:

• By pressing and holding the power button and taping on the speaker icon,
• By swiping down from the top and tapping on the speaker icon,
• By pressing the volume (+) up key.
  
  

Note: On some older devices you need to change the profile, from Silent to General.

If the device's ringtone volume level is low, you won't be able to hear it ringing. All you have to do is to increase the volume level, either by pressing the volume (+) button or via Settings.

Go to Settings and tap on Sounds (& notification). Move the slider under Ring volume to the right as much as you prefer.

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Note: The screenshots are taken using a Sony Xperia M2, running on Android 5.1.1 Lollipop. The instructions mentioned here might slightly vary from one manufacturer to another.

Maybe your device doesn't ring because the call barring feature is enabled. This feature blocks all the incoming calls.

You can disable this feature via the call settings or by contacting the carrier (operator) you are subscribed to.

The call diverting feature enables you to divert all the incoming calls from one phone number to another. If you have enabled this feature, you won't be able to receive calls; therefore, your device won't ring.

Go to the device's Call Settings and disable call diverting. If you are not sure how, ask the carrier (operator) you are subscribed to for instructions.