20 Most Recent Nokia Lumia 630 Dual SIM Unlocked Smart Phone 8GB Yellow - Page 3 Questions & Answers

check the menu in all calls

you have to take it to your cell provider. It over heated the circuit board in the phone.

software issue. hard reset, or replace device.

You can get the unlock code for your Nokia phone from TheUnlockArena.com and unlock your phone from Network lock easily.

Change the sim card

just remove the old sim and enter new sim other wise format the entire phone then u will be done

check here: http://www.u2ugsm.com/mob_rep_detail_reptype-set.php?rep_type=Light%20Problem&mobile_name=Nokia%20N76

Its what your provider provide you with sim-card. If you dont have one, you should contact them.

Well there is no universal PUK code available which you punch in and get the phone unlocked. So do not try to punch in PUK codes which your are not sure of in an effort to unlock the phone, because putting the wrong PUK code, ten times in a row will permanently deactivate your SIM card. So to unlock the Nokia PUK code, you will have to call the customer service helpline of the network provider, who will ask you for the registration number of your SIM card. Once you provide them with the SIM card registration number, the PUK code will be given to you. PUK code better known as the PUC or the personal unlocking code is a feature which is present in all GSM cell phones