Hey Mary!
Sorry for the delay in responding, hopefully you haven't given up yet.
Here is what I suggest:
Wipe the system cache.
You will have to get into Recovery mode. To do this:
- hold down volume up + home + power all at once (don't let go too soon)
- wait until the boot screen comes up and it will says recovery in the top left very small, let go at this point
- use the volume up and down to scroll and use the home button to select
- choose wipe cache
- than choose boot system
This could resolve the issue. If it does't however, then you can use Kies software on your PC to reload the stock firmware that was on your phone when you first bought it. At the XDA developer forum, they give you a step by step way to do this, along with pictures,
here.
Best of luck!
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