OK, if you want to "Turn on Smart Life" with Samsung Galaxy S, you have to turn on the field test mode first. Here is the secret code to activate the engineering mode or netmonitor of Samsung Galaxy S:
After you enter the code, the phone with enter into "Service Mode".
2013.02.28 Update : Some phone models do not support the function now. You need special application to activate it. Check post Samsung Service Mode for details.