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These directions are for an AT and T phone, but other than that, are the same for any carrier. A PUK (PIN Unlock Key) code is required to unlock SIM cards that have become locked following three successive incorrect PIN entries. If your SIM card becomes locked, you will need to get a PUK code from your phone carrier to unlock your SIM card. You can obtain your phone's PUK code from your carrier in one of these ways: Log in to Your account.online Use a Technical Support Chat Contact your carriers Customer Care Get Your Phone's PUK Code Online Go to the Phone/Device page. From the My Phone/Device screen, select the Unblock SIM Card link under the My Make & Model heading. The Unblock SIM screen will display your PUK code and will give you instructions for unblocking your SIM Card. Once you receive your PUK code, you will need to enter it into your phone to set a new PIN code. Note: If you enter the wrong PUK code 10 times in a row, your SIM card will be invalidated, and you will need to purchase a new SIM Card. The phone will display the following error: "PUK blocked call operator
Not a problem. Follow the following process to do it.
1. Copy all your contacts/numbers from your old phone memory into the sim card memory. 2. Turn off the phone and take the sim card out. 3. Insert the sim card into your new phone and copy the contacts/numbers from sim card to phone memory.
Hope it helps for you.
Please let me know if you need further assistance.
First thing you should try is holding a bright flashlight to the screen when it is turned on, if you do this in a dark room it might allow you to see the screen, if not follow these steps.
1. open the phone book
2. Press up once
3. press menu
4. press down twice
5. press enter
6. press up once
7. press enter, wait a sec press enter again.
hopefully that will work