Why is Samsung Galaxy S5 not showing messages on lock screen?

[AC Question]

A few days ago Samsung Galaxy s5 was working fine the messages would appear on the lockscreen whenever messages were received and they would sound. And now you can only hear when they come in you can't see them on the lockscreen. Is there anyway that I can see them on the lockscreen again or is the phone just going to keep doing that ?
Thanks

 

[chanchan05]

Was there any recent change, like did you start using a different sms app? Did you receice a software update?

 

[travez19]

No I didn't start using a different SMS app and haven't upgraded it either