Nokia N90-1 User Manual page 124

Successful completion of the steps is not a total assurance
of the authenticity of the battery. If you have any reason
to believe that your battery is not an authentic original
Nokia battery, you should refrain from using it .
If authenticity cannot be verified, return the battery to the
place of purchase.
Authenticate hologram
1
When looking at the hologram on
the label, you should see the Nokia
connecting hands symbol from
one angle and the Nokia Original
Enhancements logo when looking
from another angle.
2
When you angle the hologram left,
right, down, and up, you should
see 1, 2, 3, and 4 dots on each side
respectively.
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