Why is my brand new iPhone not ringing for incoming calls?

If your new iPhone isn't ringing for incoming calls, the most likely reasons are: the physical ringer switch is on silent, your phone is in Do Not Disturb mode, the ringer volume is set too low, or you might have accidentally activated Airplane mode; check these settings in your phone's "Settings" menu and ensure they are adjusted correctly. 

Other potential causes:

• Speaker issues:
• A clogged speaker port or a faulty speaker could prevent sound from playing. 
• Software glitches:
• Sometimes a simple restart can fix minor software issues that might be affecting your phone's ringer function. 
• Bluetooth connection:
• If your iPhone is connected to a Bluetooth device, incoming calls might be routed through the headphones instead of the phone's speaker. 
• Call forwarding enabled:
• Check your call forwarding settings to ensure they are not accidentally activated. 
• Network problems:
• Poor network connectivity could sometimes cause issues with receiving calls. 

What to do:

• Check the physical ringer switch: Make sure the physical switch on the side of your phone is not flipped to the silent position. 
• Access Do Not Disturb settings: Go to "Settings" > "Focus" (previously called "Do Not Disturb") and check if it's turned on. 
• Adjust ringer volume: Open "Settings" > "Sounds & Haptics" and ensure the ringer volume is turned up. 
• Check Airplane mode: Verify that Airplane mode is not activated in the Control Center. 
• Restart your iPhone: Try restarting your phone to refresh the system. 
• Check for software updates: Ensure your iPhone is running the latest iOS version. 
• Contact your carrier: If the issue persists, contact your cellular provider to check for network related problems.