BB 8703 OS4.5 internet and email stop, phone and sms still work

Question

Just about every day, at seemingly random times, my internet and email quit working, with no warning.  Everything looks fine, and the phone and sms still send and receive, but no internet or email.  I first noticed no email past a point, say 10am that day, and then I tried intenet and it would not connect.  But phone calls in and out and sms worked.  So, I turned it off and back on, and I suddenly got all the queued up email, and the internet worked. 
Any ideas?  Seems the network loses my internet and email, but still maintains my phone connection.
Steve

Answer 1

OK give those a try...it may also be that you have many apps running that are causing conflicts. Check this:
There are three types of potential memory on a BB: 1) Application Memory, 2) Device Memory, and 3) Media/SD Card Memory
Application Memory -- This is the most crucial; it is the protected (not user accessible), dedicated, and fixed (in size) space that is available as the destination for the installation of applications (plus some application storage, overhead and such). You cannot touch AppMemory. You cannot improve the maximum AppMemory that your BB has. It is what it is. Applications can only install here...there is no option.
Device Memory -- This is space on your BB that you can touch to store files, pictures, media, etc. Typically, it is not terribly large, but it is available to you.
SD/Media Card Memory -- This is what it says...your SD card, for you to store files, media, pictures, etc. It can be as large as your BB OS can support...see this KB:
http://www.blackberry.com/btsc/KB05461
On some devices/OS levels, Device Memory and Application Memory are combined into "File Free"...these are, IMO, a little harder to administer as you really can't see well just how much AppMemory you have. Nevertheless, here are some guidelines to use:
http://www.blackberry.com/btsc/KB15345
http://www.blackberry.com/btsc/KB14320
http://www.blackberry.com/btsc/KB14213
Lastly, it is always important to properly close applications when you are done with them. Using the Back or the Red key will not do this -- those leave it to the app to decide what to do...and some will leave themselves resident in memory, consuming resources on your BB, slowing the overall performance. Rather, to close an app, press the BBKey and select "Close" or "Exit"...that will force the application to be closed, freeing up for your new use the resources it was consuming. Some apps will always remain running (typically -- BBMessenger, Browser, Homescreen, Phone, and Messages)...but, you should still close them properly - especially the Browser...if it is left on an active web page, it will not only consume extra resources but battery power as well.
Good luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
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