Your phone should have this capability by just setting up the notifications for text, missed calls, etc. If your phone has a notification light, you will know something came in. Unlock your phone, pull down the notification bar and you should see what it was from there. I use an app call "Executive Assistant Free". I use it as my lock screen. I can see missed calls, voice mail, e-mails, text messages, facebook and next calendar events. I can place widgets and short cuts in it too. The beauty of this is, I can view all notifications, without having to unlock my phone. I only have to unlock my phone if I want to reply or open an e-mail.