Bottom left of iPhone screen (when locked)....

[Merkur1]

Hi,
Every once in awhile I notice a small icon (or application icon) at the bottom left of my locked iPhone screen. Doesn't seem to do anything....or does it?
If not, what might it signify?

Thanks

 

[SwitchBeach]

It's the Continuity icon.

Read more here.

https://support.apple.com/en-us/HT204681
Continuity: The Ultimate Guide | iMore

 

[Merkur1]

SwitchBeach: Thanks! My brother and I have wondered about it from time to time....

 

[Rene Ritchie]

Hi,
Every once in awhile I notice a small icon (or application icon) at the bottom left of my locked iPhone screen. Doesn't seem to do anything....or does it?
If not, what might it signify?

Thanks

Hey, thanks for the question!

Like SwitchBeach said, it's the suggested/continuty app shortcut.

How to navigate the Lock screen on iOS 10 | iMore