Texts not coming through occasionally when using another app

[AC Question]

Sometimes when playing a game or using various apps, I will hear a text notification sound, but no text update will be there. I will open my messages, and there will be no new ones. I have it set so certain people will have specific text tones, and when I heard one I recognized with no new messages from them I asked if they messaged me and they said yes, so I KNOW there are messages that I am not receiving. It is usually when I'm playing a game, but occasionally happens when I'm doing other things, like using the internet or snapchat.

 

[DoctorWhorible]

this was me, just registered now. Phone is LG Volt, boost mobile, running android 4.4.2