Hi 1946Jeepcj2,
We appreciate you reaching out to us.
We’d like to gather additional details that may help us be in a better position to assist you.
Have you had the chance to go through all the steps in the article below?
If you can't pair an Apple Watch with your iPhone - Apple Support
In the meantime, please check for a software update and make sure that you are running the latest version of iOS that is compatible with your iPhone SE.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
- How to back up your iPhone, iPad, and iPod touch - Apple Support
- Update your iPhone or iPad - Apple Support
If your iPhone is already up to date and you have tried all the steps in the article above, please reach out to us using the support link below so we can take a closer look into the issue.
Get Support
Take care!