no notifications on messenges

[Kmax21]

About 4 or 5 days ago sounds for incoming (text)messages stopped working and so did notifications in the top left task bar. Checked sound in settings and made sure it's on full volume. The only way I know a text has arrived is the number of texts badge on the message icon. Help!

[Uliwooly]

Open the messaging app > menu > settings > check under notification settings. 

[Kmax21]

Already done that too thanks, status bar and notification sounds switched on. Tried rebooting phone too

[Uliwooly]

Have you installed a third party messaging app and/or notification app?

[Phy]

Boot on safe mode and check again.

How to boot on safe mode.
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[Kmax21]

No third party apps. Hangouts is pretty installed but I've never used it.

[Uliwooly]

Follow @Phy 's advice, boot on safe mode, and check again, if you receive notification while on safemode then its a third party app acting up 

[Kmax21]

Thanks again, no luck in safe mode either

[Uliwooly]

You could repair your phone with PCC

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Phy]

 
How to clear data on apps. From your Home screen 

1. Tap the Application screen icon.
2. Find and tap Settings > Apps.
3. Swipe to the All tab.
4. Find and tap on Messaging.
5.  Tap Force stop > Clear data.
6. Restart the phone