Help Turn on Screen in Screen Lock mode

[sujieta]

Hi All,

Recently i purchased Sony Xperia Neo L, ICS 4.0.4,

I noticed whenever i power lock my phone;

My screen does NOT (although the vibration is there)turn on for smses,facebook notifications,gmails and whatsapp. I could see the notifications in status bar(on top of the phone) when I unlock the screen. Am i missing something here?

I need a app like SMSAwake that makes my screen turn on whenever i receive a sms. But it does not work for FB, Gmail or Whatsapp.

Please help. Thanks