Why cant i hear my notifications when i receive a text?

[AC Question]

So i just got the Alcatel Idol 4, and i love it! i just cant hear my notification when my text messages come in.

 

[ManiacJoe]

What SMS app are you using?

Is the app displaying your conversation thread when a new text comes in?
Some SMS apps will not do the notification sound in that case. Check your app settings.