Airdrop
Why do I have a "red 2" on the Airdrop symbol on my iPhone 11 Pro Max? How do I get rid of it?
I just found the solution.
As I was sending a photo to another of my devices, the red dot with the number 2 came up as well.
Turned out, that is the number of devices near you, ready to receive data via AirDrop.
If you tap on the AirDrop icon, it will open a screen, showing you which persons or devices are in reach to receive your data via AirDrop. In my case, 2 other devices.