06-16-2013 12:03 PM
06-16-2013 12:28 PM
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1. It can be a battery issue or the problem with ondevice battery meter , as a first step for any resolution you can try to reload the OS it may help or try another Battery to know the result.
2. Your Rebooting issue may not be because of the media card but a 3rd party app can be the reason or battery problem.
So in my opnion you should try to perform a Clean OS relaod it will fix any software glitch if problem reappear then you can consider buying a new battery or arrange a good battery and test it on your device.
First do a backup using desktop software then perform a Clean OS reload , for help refer to this Knowledge Base ;
KB11320 : How to perform a clean reload of the BlackBerry Device software using BlackBerry desktop software for windows
Try it and let us know.