S9+ lock screen issue -

[Msls9]

to unlock my phone i have iris, face and fingerprint security measures. At times the phone will unlock without using any of the security features. Very frustrating as it will happen when in my pocket.

Accidental touches blocked and no smart lock settings applied.

 

[mary beth hale]

Sorry... Was going to suggest something but I miss read your post.

 

[mustang7757]

maybe you have your screen timeout or lock screen lock time out longer check those settings , first I've heard of this happening without smart Lock on .

 

[lucianus_luciferus]

Maybe you touch the fingerprint sensor when you grab the phone in your pocket.
Or maybe you have home button hard press unlock enabled.