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BlackBerry® OS Smartphones

New Member
Posts: 2
Registered: ‎01-24-2013
My Device: Curve 9300
My Carrier: Fido

Phone shutting down constantly

I have had my BB Curve 9300 for almost 2 years.  I charge it to 100% almost every night.  Recently (the last month or 2), the phone shuts off when the charge is between 40% and 60%.  When I plug the phone in and turn it back on, it says the battery is at 0%.  Why is this happening and how can I prevent it?


FYI: I have no apps running in the background.  When I switch apps I see Home, Messages, Phone, Browser (with no open web pages) and BB Messenger.  I don't use Twitter or even have the app installed.  I do use the facebook app but my settings are set to refresh the newsfeed every hour.  I used to be able to go days without charging if I chose to, now I can barely go a day and a half without charging and I have not changed my usage frquency nor downloaded any new apps.  Thank you.

New Member
Posts: 2
Registered: ‎01-24-2013
My Device: Curve 9300
My Carrier: Fido

Re: Phone shutting down constantly

I forgot to mention that I purchased a new battery but the same thing is still happening. Leads me to suspect the phone, the SIM or the OS (not the charger, since it does charge to 100% when I use it)?
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: Phone shutting down constantly

Hi and Welcome to the Community!

Please try this sequence...note that, throughout the entire 4h15m process, your BB must remain connected to a known-good wall charger (not PC USB):

  1. With the battery inside, connect your BB to the wall charger
  2. Leave it alone for 2 hours, no matter what the LED or the display does
  3. Remove the battery
  4. Wait 15 minutes
  5. Insert the battery
  6. Wait another 2 hours, no matter what the LED or the display does

This has been known to "kick start" some BBs.

It is also possible that your battery or BB has experienced a problem...to test, this sequence is needed:

  1. Obtain a known good and already fully charged additional battery...use it in your BB and see what happens
  2. Obtain access to a known good and identical BB...use your battery in it and see what happens

The results of this will indicate if it's your BB or your battery that has the problem. Note that your "new" battery does not necessarily meet the condition of "known good"...while rare, a new battery can certainly be defective. The best way is to find someone with an identical BB that does not have these problems...exchange batteries and see what happens.

You also might try running in Safe Mode for a while:

  • KB17877 How to start a BlackBerry smartphone in Safe Mode

It may take you multiple attempts to get the ESC key sequence (press/release/hold) correct, so be patient. When successfully into Safe Mode, see if the behavior continues. If it does not, then think carefully...what happened just before this behavior started? A new app? An update? A Theme? Something else? Think carefully as the smallest change could be causal...and attempt to undo whatever that was.

Good luck and let us know!
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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