I have myv cell phone samsung A777 sim card lock by puk what can I do to unlock my sim card

• It is the sim card that is locked I presume.
• Go to settings
• Then to Phone
• There to Sim pin
• To Change Pin

Follow the instructions
If/when you are asked for the puk number then contact
your service provider who will give you a puk number.
If you follow the instructions your phone will function again.
good luck
kolbrun

It must be a G3 or G4 iPad. The sim is locked and you need a PUK. The puk was on a card with the sim that went in, together with the initial pin. When someone locked you phone to tablet, by entering the pin (for the sim) wrong, 3 times in a row, you can unlock it with the PUK.
If you can't find the PUK, goto a store of your provider. Sometimes they can give you the PUK and if not, they can give you a new sim, with a new pin and puk, and put your number on the sim.
That should be all.

As I understand from personal experience, the PUK code is only available from the service provider. You need PUK code after you entered the wrong PIN 3 times for the SIM card. Call your service provider or get a new SIM card.

Your iPad 2 must have 3G, with a sim card. For the sim you need the pin and after 3 misses you need the puk. The puk is on the letter or card that came with the original sim card. On that letter is the pin and puk. sometimes you have to scratch away the metal layer.

If you want to unlock an iPad, with the lock code on, and forgot your pass code you have to enter the correct password that belongs to your Apple ID. It will be partially on the screen. If you really messed up, setting up security, and lost unlock code and your Apple ID password. Only Apple can help. For that you have to take iPad, invoice, Prove of your identity (Passport) to the Apple store and hope they will unlock your iPad. With iOS7 Apple mede a very good security system. And while setting up the iPad and the security, you are warned several times what to do t make sure you and only you could enter the system.
Be aware if Apple does reset your iPad, all data now on the iPad will be lost.

you can find the PUK & PIN only on the package or SIM-card holder which came with your SIM-card - see photo

Step 1: Look in your SIM card wallet. Most network providers will give you your PUK code on the SIM card holder and instruction manual/ package when you buy the phone. Others send the code through the post in your welcome pack.
Step 2: Contact your network provider's customer service team. If you can't find your PUK code in your SIM card wallet, contact your network provider. It will confirm that you are the account holder and provide you with your PUK code. However, remember you will need another phone to do so
Step 3
Visit the network service provider's website, where some networks will allow you to access your PUK code online. Networks such as AT&T require customers to sign into their online account before accessing their PUK code. However, others simply require you to enter your phone number before displaying your PUK code.
What is PUK

HI if your samsung Galaxy Tab P1000 mobile displays sim network unlock pin .Then it mean your phone is locked to any particular network provider due to this you can't use your phone with other network sim ..To fix this you have to unlock your phone from network provider lock ..You can easily unlock your phone using sites like Mobile-Unlocker.com here they render unlock code for all mobile models at reliable cost ...

PUK Code
PUK stands for Personal Unblocking Key. This is a unique eight-digit code specific to your SIM card. This is required when the PIN number to unlock your mobile phone is entered incorrectly 3 times. You are then given 10 attempts to enter your PUK code. If an incorrect PUK code is entered after the 10th attempt, you will block your SIM card permanently and will require a new SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways - The PUK code is in your SIM card documentation Starter Pack. If you do not have this then - Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give them your account details and they have confirmed your identity. For details to obtain the PUK code for the SIM card, please click on this link and follow my instructions.
http://www.fixya.com/support/r5705889-puk_code

Yes! It is possible to unlock iPad (or other iOS devices) now. And if you prefer an easier way to get the job done, see how you can achieve it on your PC or Mac on your own from this website: automaticiphoneunlocker.com

Here's an unlocking guide.