custom vibration on Iphone 12 pro.

Hello Jake3309,

Thanks for reaching out and posting in Apple Support Communities. 

Let’s see if we can help out with creating a customized vibration.

The article you posted your question in, How to put your iPhone on vibrate, ring, or silent mode is the correct one to use for creating a custom vibration.  

Tell us what happens when you try. Do you get a message pop-up? Are you able to create, but it doesn’t appear? What is the iOS version installed on your iPhone? That can be found in Settings > General > About.

We look forward to hearing back from you with more details.

Cheers