ToolsIf you remove software, you can only reinstall it if you havethe original software package or a full backup of theremoved software package. If you remove a softwarepackage, you may no longer be able to open documentscreated with that software.If another software package depends on the softwarepackage that you removed, the other software packagemay stop working. Refer to the documentation of theinstalled software package for details.Application settingsSelect Options > Settings and from the following:Software installation—Select if Symbian software can beinstalled: On, Signed only, or Off.Online certif. check—Select to check the onlinecertificates before installing an application.Activation keys—handlecopyright-protected filesCopyright protections may prevent some images, music(including ringing tones), and other content from beingcopied, modified, transferred, or forwarded.Press , and select Tools > Activation keys to view thedigital rights activation keys stored in your device:• Valid keys ( ) are connected to one or more mediafiles.• With expired keys ( ), you have no time to use themedia file, or the time period for using the file isexceeded. To view the Expired activation keys,press .To buy more usage time or extend the usage period for amedia file, select an activation key and Options > Activate