Connection problem or Invalid MMI code

[SamsungF4n]

So whenever I type in *#0*# on my Samsung Galaxy S24 on phone app it says "Connection problem or invalid MMI code"

[meself]

Many of those short codes are blocked by carrier

[AAbbott]

Most carriers block short codes. Why would you need them anyway? Your phone normally contains any information you may need to get from short codes.

[meself]

What