Pairing Sennheiser to iPhone 12

Hello Adeera,

We understand that your headphones aren't pairing. You'll want to follow the steps listed here for how to Pair a third-party Bluetooth accessory with your iPhone, iPad, or iPod touch - Apple Support

If those are what isn't working, then we'd continue with If you can't connect a Bluetooth accessory to your iPhone, iPad, or iPod touch - Apple Support

To get help pairing a Bluetooth accessory—like a wireless keyboard—to your iOS or iPadOS device, try these steps:

1. Make sure that your Bluetooth accessory and iOS or iPadOS device are close to each other.
2. Turn your Bluetooth accessory off and back on again.
3. Make sure that your Bluetooth accessory is on and fully charged or connected to power. If your accessory uses batteries, see if they need to be replaced.
4. If there's an app that you use with the Bluetooth accessory, go to Settings > Privacy > Bluetooth on your iOS or iPadOS device, and make sure that you've turned on Bluetooth for the app.

If you still can't pair or connect your Bluetooth accessory

1. If you previously connected your Bluetooth accessory to your iOS or iPadOS device, unpair the accessory, put it back in discovery mode, then try to pair and connect it again.
2. If you can pair your accessory with some devices but not your iOS or iPadOS device, unpair the accessory from your other devices. Then try to pair with your iOS or iPadOS device again.
3. Check with the accessory manufacturer to make sure that your accessory supports your iOS or iPadOS device.
4. If you still have any of these issues, contact Apple Support: 

• You can’t turn on Bluetooth or the setting is grayed out.
• You can’t connect any Bluetooth accessories with your device.
• The accessory manufacturer confirmed that your accessory is working correctly.

Thanks for using Apple Support Communities!