I know, this phone is kinda old things,
I just found out how to use divert call with this phone
here are the steps
1. change language to english
and then click menu go to --> -->6. application --> 1. call --> 2. Voice calls --> 1. Call diverting
when you reach this step (call diverting), you can choose option that fullfill your need,
for example,
you choose number 1 (always) : it means every call that comes to your phone will be divert to another number
to use this feature (always)
just insert the number destination
then change status to active
finish
