Hi I want to delete all contacts off my Nokia 6230i but when i click 'delete all' it asks for a security code, what is this?

Try the default security code 0000 or 1234 or 12345 .If these code does not work then use the master reset code to reset your mobile from security lock.Visit the site Unlock-free.com get master reset code for Nokia 6230i.If you want correct network unlock code,you can get the code from that site itself.

try 0000 or 1234 one or the other often works

The best solution for your mobile is to do a master rest. It would restore your phone to default factory settings as you expected. You can get a free master reset code for Nokia 6230i from www.unlock-free.com/nokia-master/nokia-6230i.html just submit your IMEI number here and the free code will be provided to you.

Hey you can get the Security code for your Nokia 6230i from Unlock-free.com . It provides the free service.You can use this and reset your mobile easily.

you have to go to nokia care or get it restored from any local cellphone repairer...

you can try service provider

To take control of your nokia phone once again, you will need to reset the phone (by hard reset). Note that the hard reset will delete all files and applications on the phone, but the good thing is that your phone will be mad new once again.
Firstly, ensure that you back up your files, apps,etc on your memory card.
Secondly, don't insert your main sim into the phone before you reset it.
Thirdly, on the idle screen of your phone, dial; *#7370# This will request for a security code. Now type in: 12345, then ok/send. The phone will restart, and everything willl be new again.
Please, note that you new security code will be: 12345 . However, you can decide to change it as you wish. Thanks. Hope this helped.

IMEI: 357082/00/165797/9

Master Code: 1760007606

this is your 10 digit master code.. keep is safe because this cant be changed, only security code can be changed.
this code will work everywhr whr it asks for SECURITY CODE (ex keypad unlock with security code, reset phone to factory settings, etc.)

Cheerz

Visit NokiaCare with ORIGINAL PURCHASE BILL.

just enter the mastercode below when it ask for your security code
Security Mastercode: 7516460560

then reset it to the one you want