My cellphone says sim blocked its a government cell phone

probably needs a PUK code which is only available from the service provider on proof of ownership of the account
if you are a government employee, talk with your administrator /supervisor first as they may already have the PUK code on file

PUK code is a SIM specific code assigned by your service provider so call Customer care and state the problem then they will ask for some codes written on you SIM card. Few people use PIN locking system to lock their phone to avoid un-authorised access. Though this is a good option, it ****** you off sometime. Three wrong entry of PIN code will result in SIM blocking. Once SIM gets blocked, phone starts asking PUK code to enter. If you again enter wrong code for three times, SIM gets completely blocked. You have to walk into your service provider outlet to get a replacement SIM card.
I think it may help you.
You can leave comment/Vote!
Best Regards
Ajay

you can block your SIM card by calling your network service providers number block your phone set by providing IMEI for finding IMEI put *#06#

A PUK blocked message pops up after one enters the wrong PUK code 7 or 10 times in a row, depending on the service provider. A PUK code is required only after one blocks the SIM PIN code.

Many times, it may so happen that you block your PIN code. You will need to call the customer care of the service provider of your cell phone for the PUK code or refer the SIM certificates for the PUK code. If you enter the wrong PUK code 7 to 10 times in succession, it will lead to PUK blocked. After entering the wrong PUK code 10 times in a row, the SIM card becomes permanently invalid or locked. The only solution is to purchase a new SIM card.

PUK blocked requires you to get a new SIM card. It does not matter whether you use a Nokia Cell Phone, LG Cellphone, Motorola Cell Phone, Samsung or Sony Ericsson handset. The handset is not the one that's deactivated, but its the SIM card that gets blocked. So, contact your network store for further help and getting yourself a new SIM card (new phone number). I hope this article on PUK blocked on cell phone has helped you find the solution to your phone problems.

You must lock the sim card , not the phone. Call your operator to lock that sim card and to give you another sim with the same phone number.

Hi friend,
Make a call to ur cellphone service provider,and tell them that you want to block your sim card.
They might be asking your address detail and some information to verify that you are the owner of the sim.Once verified they ll block your sim.
keep in mind your details should match with the details of the proof which you have given while subscription.

can you explain more detail about your problem.
what is blocked sim that you mean and what cellphone brand and type that you use?

once you block ur cell phone u have to get a new sim card and the puk code u have to get from your cell phone provider

IF you enter the wrong security code in too many times, it will block the SIM. You will need to have it replaced. Best of Luck.