iOs 15 not connecting to BOSE headphones

Hey there N8charm,

Thanks for reaching out to Apple Support Communities. We understand that you're having some issues connecting to your Bluetooth headphones after updating. We're happy to provide some assistance.

Let's follow the steps outlined in this helpful resource that relates to the issue you're having:

If you can't connect a Bluetooth accessory to your iPhone, iPad, or iPod touch

If you continue to experience issues, see if this occurs with other Bluetooth accessories to help isolate the issue.

We hope this helps.

Have a great day!