After you install applications to a compatiblememory card, installation files (.sis, .sisx) remain inthe device memory. The files may use large amountsof memory and prevent you from storing other files.To maintain sufficient memory, use Nokia Ovi Suiteto back up installation files to a compatible PC, thenuse the file manager to remove the installation filesfrom the device memory. If the .sis file is a messageattachment, delete the message from theMessaging inbox.Remove applicationsSelect Menu > Settings and Application mgr..To remove a software package, select Installedapps. > Options > Uninstall. Select Yes toconfirm.If you remove software, you can only reinstall it ifyou have the original software package or a fullbackup of the removed software package. If youremove a software package, you may no longer beable to open documents created with that software.If another software package depends on thesoftware package that you removed, the othersoftware package may stop working. Refer to thedocumentation of the installed software packagefor details.Application manager settingsSelect Menu > Settings and Application mgr..Select Installation settings and from thefollowing:● Software installation — Select whetherSymbian software that has no verified digitalsignature can be installed.● Online certificate check — Select to check theonline certificates before installing anapplication.● Default web address — Set the default webaddress used when checking online certificates.Calling settingsCall settingsSelect Menu > Settings. Select Calling > Call andfrom the following:● Send my caller ID — Select Yes to show yourphone number to the person you are calling. Touse the setting agreed upon with your serviceprovider, select Set by network) (networkservice).● Send my internet call ID — Select Yes to showyour internet call ID to the person you are calling.● Call waiting — Activate your device to notifyyou of incoming calls while you are in a call 151 Settings