Well, I use the app "textfree" because I have a data plan, but my phone's vibration is too soft for me to only notice when it vibrates once. It's at its max strength of vibration, and there's no app that makes my phone vibrate stronger when it receives a notification. I tried using "Vibration Notifier" and it's a great concept, except my phone TURNS ON when there's a notification, so the purpose of that app is eliminated. Is there any other app that could help me?