Blue light on the corner of my iPhone 12 Pro Max

If I am looking at the front of my iPhone 12 Pro Max the small round blue light can be seen in the upper left corner right next to the location status arrow. But I only saw it briefly for the first time and it disappeared the moment it knew I saw it

That Mac is my hackers computer as well as the 2nd 12 pro max. No one seems to be able to help me get rid of him

[Re-Titled by Moderator]