Samsung Galaxy S5: How to Fix Still Get Message Notifications when Do Not Disturb Mode is Enabled and Messages is not Set as Exceptions in Android 5.0.1 Lollipop

A couple weeks back, an insider asked me through her comment about why her phone still played notifications when receiving messages whereas she had turned on the Do not disturb mode and didn't set messages as exceptions. After some further investigation, it turned out that the stock Messaging app notification in her phone has been accidentally set as priority. Thus, if you're also experience this problem, you have to turn off priority settings for the stock Messaging app notification in your Samsung Galaxy S5 so that your phone will mute notifications(sound and vibration) when you receive messages when the Do not disturb is enabled and messages is not set as exceptions.

How to turn off priority settings for the stock Messaging app notification?
You can do so by using the following steps:

1. On any screen, swipe down the top of the screen to open up the notifications panel and then tap at the top right to go to the settings menu.
2. With the settings menu is displayed in grid view, scroll down to the Sound and display section and then tap Sounds and notifications .
3. Scroll the screen to the very bottom, and then tap App notifications.
4. Scroll down to find Messages, and then tap it.
5. Slide the ON/OFF switch next to Priority to the left to turn this option off. The switch turns gray when it's disabled.
6. From now on, assuming that the Do not disturb mode is enabled and messages is not set as exceptions, your phone will mute notification(sound and vibration) when a new message arrives.