I know this is not PC related, it is however very common question I get from many of my customers, so i thought i would post a little article on it.
Okay lets just start with rebooting the device With the BlackBerry device POWERED ON,
remove the battery for a 20 secs , and then reinsert the battery to
reboot.
After using your Blackberry for a while you may experience freezing or lagging/slow response on any BlackBerry,
the most important practice you can adopt is to be sure to CLOSE
applications when you are finished using them.
If you just hit
the red "end call" key to go back to the home screen the application
actually stays open and running in the background.
If you do this
repeatedly don't close the applications properly, you will have lots of apps open and consequently your memory
will get used up pretty quickly.
The lack of memory is the biggest reason your BlackBerry
slows to a crawl or locks up.
Get into the habit of actually
using the menu key to close the applications this will at least slow
down this memory-clogging process. You still may have to do a battery
pull or use the "Quickpull" app once in a while when things get slow.
To
check what applications are running on your device in the background,
press the Menu key,
then choose Switch Applications. You will see the
icons of each application there. Select the icon of the application you want to close open it then click the blackberry menu button scroll to the bottom of the menu and select 'Close'
So now, check your applications
running in the background.
There are commonly four or five applications
that will always be running (Messages, Call Logs/Phone, BlackBerry
Messenger, Homescreen, and the Browser;
There are other third party
applications such as, Whatsapp, BlackBerry Alerts which will also run
in the background which you cannot close if you want them to operate).
Make certain that the browser is NOT on an active webpage. Close any other applications that
do not need to be running (the camera or a game you were playing or
Google Maps etc).
Next, Blackberry devices by default create event logs you can
delete the event logs by doing the following:
Holding the "ALT" button and pressing "L G L G" one after another, then press the menu button and scroll down to 'clear log' and select it, then select 'delete'.
Clearing the memory log, we can free up 1-2 meg or so of memory space depending on amount of apps. If you do not want your blackberry to create event logs you can select 'options' and untick the boxes or an even easier option is to press the menu button again and select 'Hide all Types'.