Tip 2: Save on battery and system memory being used by regulary checking the task manager which can be accessed by holding down the menu button!! Close the applications that are not in use.
Tip 3: Set the screen saver to a short time out period to prolong battery life.
Tip 4: Avoid restarting the phone, or repeatedly turning it on and off. This helps increase battery life.
Tip5: While you are viewing a picture in your phone's gallery, press one of these shortcut keys (definitely works on 6600, not sure about other symbians)
1 - turn image anticlockwise
3 - turn image clockwise
* - toggle on/off of full screen
5 - zoom in
0 - zoom out
Tip 6: Only got blue, green and purple in your 3650 colour palette? This free app adds 3 more colours: Palette Extender.
Tip 7: You can speed up the phone by setting the time of the "Recent calls register" to one day (30 days by default).
Tip 8: Delete all messages from your Inbox at once:Menu > Messaging > Inbox > Options > Mark/Unmark > Mark all > Options > Delete
Tip 9: Record the sound of a phone call using the (sound) Recorder. Menu > Extra's > Recorder > Options > Record sound clip.Note: short beeps are audible during call registration.But there is a 60 second limitation so if you want unlimited sound recording get this app: Extended Recorder.
Tip 10: If you would like to avoid being "blue jacked", keep bluetooth turned off, or set your phone's visibility to hidden.