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New Contributor
Posts: 2
Registered: ‎12-03-2012
My Device: Blackberry Curve
My Carrier: 9122704374

Please Help!! Uncaught Exception: Index 0>=0 What's going on and how do I fix this?

I am unable to use my phone, get to my contacts, etc. This message is on the display. I can remove the battery and re-insert and it goes away, but the moment I touch any key, the message is back!! I NEED to use my phone.

Hall of Famer III
Posts: 58,151
Registered: ‎11-28-2008
My Device: DTEK50 (AAH108), PRIV (AAH995), Z10/Z30/Q10 (10.3.2.2813), Playbook (2.1.0.1917)
My Carrier: TMobile USA

Re: Please Help!! Uncaught Exception: Index 0>=0 What's going on and how do I fix this?

Hi and Welcome to the Community!!

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:


Sometimes, the code simply becomes corrupt and needs to be refreshed -- just like a reboot:

  • Anytime random strange behavior or sluggishness creeps in, the first thing to do is a battery pop reboot. With power ON, remove the back cover and pull out the battery. Wait about a minute then replace the battery and cover. Power up and wait patiently through the long reboot -- ~5 minutes. See if things have returned to good operation. Like all computing devices, BB's suffer from memory leaks and such...with a hard reboot being the best cure.

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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New Contributor
Posts: 2
Registered: ‎12-03-2012
My Device: Blackberry Curve
My Carrier: 9122704374

Re: Please Help!! Uncaught Exception: Index 0>=0 What's going on and how do I fix this?

I did the battery re-boot with the power ON as suggested and it re-boots without the error message, but when I hit one of the alpha keys to use the speed dial, the error message returns. I did make one call by going into my contact list and dialing from there...just wondered if this info helps narrow down my problem for anyone.