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BlackBerry® OS Smartphones

New Contributor
Posts: 3
Registered: ‎01-24-2013
My Device: Curve 8520
My Carrier: Fido

8520 Uncaught exception:application net_rim_bb_messaging_app...

Reboot by taking out my battery and then this message

"Uncaught exception:application net_rim_bb_messaging_app"...with different numbers in brackets come up ie (228) or (88) etc "is not responding process terminated." 

I then get the option to press ok. My screen is then frozen for a while followed by a moment where I can press a couple of buttons but not get into any messages. It then freeze and the same message comes up again with the only difference being the bracketed #.


Does anyone know what to do?


Forums Advisor III
Posts: 1,077
Registered: ‎04-23-2012
My Device: 9900
My Carrier: Bharti-Airtel

Re: 8520 Uncaught exception:application net_rim_bb_messaging_app...

I would suggest you to again pull out battery while device is Powered ON and re-insert it after a min.



New Contributor
Posts: 3
Registered: ‎01-24-2013
My Device: Curve 8520
My Carrier: Fido

Re: 8520 Uncaught exception:application net_rim_bb_messaging_app...

Thanks but unfortunately that's what I meant by repeat...

I have taken the battery out many times now.

Any other suggestions?

Hall of Famer III
Posts: 59,058
Registered: ‎11-28-2008
My Device: DTEK50 (AAI82), PRIV (AAI795), Z10/Z30/Q10 (, Playbook (
My Carrier: TMobile USA

Re: 8520 Uncaught exception:application net_rim_bb_messaging_app...


There's pretty much no diagnosing those -- they are the equivalent of the random errors in Windows for which tracing the root cause is fruitless. Basically, these are the last out in the programming code -- some event occurred for which there is no handler in the code. The fix is a code update that handles the event...but, again, knowing what the event is is pretty much impossible. So, there are a few things to try:

If it won't boot up cleanly, then you may need to try Safe Mode:

  • KB17877 How to start a BlackBerry smartphone in safe mode

There might be an updated code set from the carrier -- check them via this portal:

The toughest possible cause is a badly behaving app. To find it, there are a couple of options. One is to see if you can read the log file:

Go to the home screen. Hold down the "alt" key and type 'lglg'. (You will not see anything while you type).This will bring up the log file. Scroll down (probably many pages) untill you see a line that says 'uncaught execption'. Click on this line. The name of the app will be in the info. Alternative methods for bringing up the logs are in this KB:

  • KB05349How to enable, access, and extract the event logs on a BlackBerry smartphone

The other method is to remove apps one at a time, waiting a while in between (I usually recommend a week), until the problem ceases...thereby discovering the offending app. Still another method is to reload the BB OS cleanly, leaving some time between adding other apps onto the BB so as to be able to determine exactly which one is the cause.

Good luck and let us know!

Occam's Razor nearly always applies when troubleshooting technology issues!

New to the Community? Click here and also here for helpful guidance. Also please click here for additional helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions. If anyone has been helpful to you, please show your appreciation by clicking the button. Need a reference to BB10 OS/SR versions? Click here. Need a specific BB10 AutoLoader? Send me a private message.

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