Unlocked may not be??

There are three possibilities to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Your mobile is locked to particular network provider.
If your problem persists,After replacing new Sim card means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like Unlock-Zone.com Here you can unlock your phone at low cost.

I was not able to get a free NCK code for the mobile model that you have specified.You can get the NCK code for your Sony Ericsson W580i from Theunlockarena.com by specifying the country and network to which the mobile is locked to.You will receive the unlock code along with free unlock instructions.

Hi, If you get error message as PIN blocked. Unlock?" You have entered the wrong PIN code too many times. You need to unlock your phone using the PUK (PIN Unlocking Key) code. Your PUK code is provided by your network operator. If you get error message as Insert correct SIM" You have inserted a SIM card that is not supported. Insert correct SIM card, or contact your Service Provider for a SIM unlock code. If you get error message as Phone locked" or "Enter PIN" Your phone is locked and you need to unlock it with your personal PIN. The default PIN is '0000', but you or your network operator may have changed it. I Hope it helped you. Thank you for using ' Fixya ' and have a nice day!!

Hi this model cannot be unlocked for free, it IS currently locked on a network provider, you can go to your local phone shop to get it unlocked.

Hope this helps

Muzzi_123

Hi,
you can get the unlock code here http://www.onlinegsmunlock.com/ ..It provides unlock code and instructios...By using this u can unlock ur mobile easily...

go to a company store that your phone works with and tell them you would like an unlock code so you can use the phone abroad they should help you without a problem

this erroe happens because the phone may be locked 
r else the gsm may not be supporting 
indian gsm and us gsm varies a lot check the gsm

your phone is locked tell me operator of the phone and i will genrate unlock code but not free if interested contact me on [email protected]

your phone is locked to att network that means your phone will only accept att sim card unless you unlock it. you can purchase unlock code from website www.cheapunlock.com or www.unlockitnow.com or www.yourunlockcode.com

Bring it to a dealer. They'll deal with it within minutes.