Nokia 3300 - Manual (Page 189)

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Security issues
Security features are required for some WAP services, such as banking services
or shopping on a WAP site. For such connections you need security
certificates and possibly a security module, which may be available on your
SIM card.
The security module can contain certificates as well as private and public
keys. The security module provides security services for WAP- related
applications and allows you to use a digital signature. The certificates are
saved in the security module by the service provider, or they can be downloaded
from a WAP site. For more information, contact your service provider.
Clear the cache
The information or services you have accessed are stored in the cache of your
phone. A cache is a buffer memory, which is used to store data temporarily. If
you tried to access or have accessed confidential information requiring
passwords (for example, your bank account), empty the cache of your phone
after each use.
1 Press Menu , then select Services . After a brief pause, a list of options
appear in the display.
OR
If browsing, press Options .
2 Scroll to Clear the cache and press Select .