Missing calls on your iPhone 13 can be incredibly annoying, especially when you see the missed notification pop up. The phone is right there, but it never made a sound. This usually comes down to a setting that got changed or a small software hiccup.
Let's start with the quickest fix, which solves the problem more often than not. Swipe down from the top-right corner to open Control Center and look for the Focus icon, which looks like a crescent moon or another symbol like a person or a bed. If it's highlighted, tap it to turn that Focus mode off.
Also, check the physical switch on the left side of your iPhone 13. If you see an orange strip, the phone is in silent mode. Flip the switch toward the screen so the orange is no longer visible.
Check Your Focus and Do Not Disturb Settings
Focus modes in iOS 18 are powerful for managing notifications, but they can easily silence calls if you forget they're on. Beyond the Control Center, you should check your scheduled Focus times.
Go to Settings > Focus. Here, you'll see all your Focus profiles like Do Not Disturb, Sleep, and Personal. Tap on each one and make sure they are turned off. More importantly, look at the "Turn On Automatically" section under each Focus to see if a schedule or location trigger is activating it without you realizing.
I've seen many cases where a Sleep schedule set for weeknights was still active during the day, silently blocking calls. Disabling any automatic triggers here can prevent future surprises.
Adjust Your Ringer Volume and Sound
Your ringer volume is separate from your media volume. Make sure your phone is unlocked, then press the volume up button on the side a few times. You should see the ringer volume slider appear on screen.
For more precise control, go to Settings > Sounds & Haptics. Drag the "Ringer and Alerts" slider all the way to the right. While you're here, tap on "Ringtone" and try selecting a different default tone, like "Reflection" or "Opening". Sometimes the current ringtone file can become corrupted.
Also, ensure "Change with Buttons" is turned off. This setting links your ringer volume to the side buttons, which can accidentally lower your ringer if you adjust media volume while watching a video.
Review Call Blocking and Forwarding
Two settings can redirect calls before your phone ever gets a chance to ring. First, check if you've accidentally blocked the caller. Go to Settings > Phone > Blocked Contacts and review the list.
Second, call forwarding might be enabled. Go to Settings > Phone > Call Forwarding and make sure the toggle is off. If it's on, all your calls are being sent to another number.
There's also a useful but sometimes problematic feature called Silence Unknown Callers. This sends any number not in your contacts, your recent outgoing calls, or your mail straight to voicemail. You can find it in Settings > Phone. If you're expecting a call from a new doctor's office or delivery person, you'll want this off.
Disconnect Bluetooth Accessories
When your iPhone 13 is connected to a Bluetooth device like AirPods, a car stereo, or a speaker, it often routes the call audio there. If those headphones are in another room or your car is off, the call will seem silent.
Open Control Center by swiping down from the top-right. Tap the Bluetooth icon to turn it off (it will turn gray). You can also go to Settings > Bluetooth and toggle it off there. Try a test call with Bluetooth disabled to see if the ring returns.
Restart and Update Your iPhone 13
A simple force restart can clear out temporary glitches affecting the sound. On the iPhone 13, you press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the side button until you see the Apple logo appear.
After restarting, check for a software update. iOS updates frequently include bug fixes for audio and calling issues. Go to Settings > General > Software Update. If an update is available, plug your phone into power using a reliable Lightning cable and connect to WiFi to install it.
Reset Relevant Settings
If the problem persists, you can reset specific settings without losing your data. A good place to start is resetting all settings. This will revert your sound, network, and privacy settings back to default but won't touch your photos or apps.
Go to Settings > General > Transfer or Reset iPhone > Reset. Then tap "Reset All Settings". You'll need to enter your passcode. Afterward, you'll have to reconfigure things like WiFi passwords and wallpaper, but it often resolves stubborn sound issues.
For issues specifically with internet-based calls from apps like WhatsApp or FaceTime, try resetting network settings from the same menu. This clears your WiFi networks, cellular settings, and VPN configurations.
Check for App-Specific Notification Issues
If your iPhone 13 rings for regular phone calls but not for calls from apps like WhatsApp, Messenger, or Skype, the problem is with that app's permissions. Open Settings and scroll down to the problematic app.
Tap on it, then select "Notifications". Make sure "Allow Notifications" is turned on. For calling apps, it's also crucial that the "Sounds" toggle is enabled. Sometimes, reinstalling the app can refresh its connection to the notification system.
Also, ensure your device isn't in Low Power Mode, as this can sometimes delay or affect notifications. You can check this by looking for the yellow battery icon in your status bar or in Settings > Battery.
