I made an entry in my contacts for field test, with the well known number *3001#12345#* .
When I select the entry from contacts or favourites the app doesnt start instead I hear a busy signal or a automated message (depends which carrier i use). When I type it in on keypad it works.
Any idea?, dont want to dial that stupid number all over again
also dont want mess up my SpringBoard

Why not just install the package that adds field test to the desktop. Or install boss prefs and add it as an icon at the bottom. (Thats what I do)

I like a "clean" Springboard.
just dont want an icon for every little tool.