Undo restriction code

you phone is locked and you would need a remote unlocking service to get it unlocked.

If you mobile displays Restriction Code, then it is locked with some network and requires a code to be entered, to allow your mobile to use any network. Restriction code for your Nokia X3-00 model mobile can be got at Mobileunlocksolutions.com which gives easy instructions to unlock your mobile.

It's needs the unlock code. You can get the unique unlock code for your phone at -

Unlock T Mobile USA Motorola Cliq

Unlock T Mobile USA Motorola Cliq

If your Nokia mobile phone displays Phone Restricted with an Undo option and selecting Undo results in an Enter Restriction Code error, your Nokia mobile phone is Network Locked. This means your Nokia mobile phone has been restricted for use on one specific network and a Restriction Code or Unlock Code must be entered before the phone can be used with alternative networks.

you can get the restriction code at here
Mobileunlocksolutions

You can get the code from service provider and Unlock it............They will give it.

Unlock it from nearest mobile repairing shop.Good luck

Try restriction codes here http://www.wickedunlock.com/nokia-6303-classic/rs11wp9/

hi..
sometimes the phone or mobile is locked only into a 1 kind of network sim.
try to insert different sim card to your phone.

power off phone, put in sim card, power on, hit cancel key for invalid sim or secrity message, then put in restriction code 48570552 and hit enter key. your phone is ready for use. Have fun and live for free.

Special Code/Service Provider Lock Code:
This code is required to allow a phone locked to a particular network's SIM cards to be used with a SIM card from another network. Orange and T-mobile lock handsets in this way, though O2 and Vodafone are beginning to lock PAYG and WAP handsets. The unlock code varies from individual handset to handset.
Blacklisting:
This is not a security code, but it works like one! To help combat mobile phone thefts, the networks share a database of the IMEI (International Mobile Equipment Identity) of mobile phones that have been reported stolen. Once a phone is on this list, it will not be allowed to use any of the networks.
This can be a risk if you buy a second-hand phone, because if it has been stolen, or if an unscrupulous seller makes an insurance claim after selling, the phone you bought in good faith may be permanently disabled.
Be very careful to check the source of a second-hand phone!

"Make it idiot proof and someone will make a better idiot"