Secret Code Not Working After Disabling Auto Blocker

[tiztrain]

Hey all,

Have an S22 Ultra updated to the latest OS and when I try accessing the secret codes i get the error message 'connection problem or invalid MMI code'. Auto Blocker is disabled.
Have tried the following codes:

• *#06# 
• *#0*#

I basically wanted to do a screen test/check.

[Tourbillon De La Vie · Accepted solution]

those codes don't work universally unfortunately. use diagnostics via Samsung members app to test screen

[tiztrain]

thanks. good to know