04-20-2014 09:59 AM
04-20-2014 10:13 AM
You asked a few questions so let's see if I can tackle them for you.
To delete some files you're unaware of might help and your phone's cache would be a good place to start. Yank out your battery while your phone is powered on then replace it a few seconds later. That will clear your cache and get rid of a lot of unwanted junk.
If that doesn't help, uninstalling and reinstalling the app sometimes helps so go for that if you still encounter issues.
As for an anti irus (sorry, the key between the 'C' and 'B' on my keyboard doesn't work), don't waste your time or money.
To reinstall the OS to your phone, plug your phone in to your PC and open BlackBerry Desktop Software. Click De ice (key still not working) at the top then click Backup and do a data backup. Once that's done, once again click De ice at the top but this time click Restore and load the backup you just did.
I hope that helps you.