Phone locked with Notification canceled message
Some how I accidently dialed 911 and tried to stop the call and ended up with this notificaition cancelled on my homepage that will not leave and I am not able to use my phone.
Some how I accidently dialed 911 and tried to stop the call and ended up with this notificaition cancelled on my homepage that will not leave and I am not able to use my phone.
Do you really mean all these happened accidentally? Think again please.
Call emergency services
Here's how to make the call on iPhone 8 or later:

However...
Restart the device. That's it. If issue is not resolved... Force restart iPhone - Apple Support
I guess I did not explain my situation clearly. I know how to use the sos. I was setting my phone up for a selfie in a tripod and I accidentally dialed sos. My phone then locked with the message "Notification Canceled". I tried several ways to reboot but every effort failed. I was not able to make any calls however I was able to receive calls. After about an hour the phone reverted back to it normal function.
Thanks for you response.
DA
Phone locked with Notification canceled message