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TIPs to enhance the performance of your Nokia device 
Copyright © 2006 Nokia. All rights reserved.
TIPs to enhance the performance of your 
Nokia device
TIP 1: Do not set the hard drive as your “memory in use” for 
messaging (SMS, MMS). This affects messaging performance 
and battery life.
TIP 2:
Q: I turned my device off for charging and now my personal 
wallpaper/theme is no longer on the display. What has 
happened?
A: This may happen if you store your wallpaper on the 
hard drive of your N91. Use the device’s memory to store 
wallpapers.
TIP 3: For optimal application performance, install 
applications and games in the device’s memory instead of on 
the hard drive if possible .
TIP 4: If you receive an “Out of Memory” message when 
using some applications (for example, Web Browser) this is 
not related to the hard drive, but to the device’s RAM. Ensure 
all applications not in use are closed.
TIP 5: If an application will not install or run on the hard 
drive remember it is an S60 third edition device, so old .SIS 
files may not work. Before you download/ buy an application, 
make sure that the application is compatible with an S60 
third edition. You should also verify that it is made for the 
N91 as well to be sure.
TIP 6: Avoid interrupting the installation of programs on 
start up.
TIP 7: It may appear that the hard drive is running slowly 
when opening Gallery for the first time after loading a huge 
amount of content onto the hard drive or replacing the 
battery. Subsequent gallery access should be faster.
TIP 8:
Q: What can I do with my hard drive to prepare for a SW 
update?
A: If you are planning a SW update (with new or the same 
SW version). Note the following recommendations before 
proceeding:
Backup your device’s memory using Nokia PC suite (to 
preserve your DRM activation keys, etc).
Copy your files (Music, Videos, Documents, Images 
etc) from the device’s hard drive to a compatible PC 
(recommended to use USB Mass storage mode).
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