iPhone SE model MMXF3B/A Headphones

To disconnect your Bluetooth headphones from your iPhone SE and switch back to the device's built-in speaker for sound notifications, follow these steps:

1. Open the Control Center: Swipe down from the top-right corner of the screen (or swipe up from the bottom, depending on your iOS version) to access the Control Center.

2. Look for the "Headphones" icon: In the Control Center, you should see an icon that represents your connected headphones. It might look like a pair of headphones or the headphone brand's logo.

3. Tap the "Headphones" icon: Tap the headphones icon to open the audio output menu.

4. Select your iPhone's speaker: In the audio output menu, you should see options for available audio output devices. Select your iPhone's built-in speaker or "iPhone" from the list.

This should disconnect your headphones and switch the audio output back to your iPhone's speaker, allowing you to hear sound notifications again.

There are headphones connected to your phone. Go to settings>bluetooth to see the paired devices and to unpair the paired headphones