how to format phone memory

Press the Menu button then go to Tools, open utilities then select memory and finally select Options and you will see the option to format your memory card.

After you have formatted your memory card then you can back up your phone memory to the memory card.

When you also want to format the device memory C: , do the "Vulcan Death Grip" .
Erases all Files , except 1) Firmware (Z: or ROM) and 2) Memorycard ( E: ) . For Memorycard see Post above . For VDG See :
http://www.allaboutsymbian.com/forum//forum/thread/81021/

When you need your personal data , Make a Backup first !

😊 Regards jApi NL