What is an unlock SIM?
Most cellphones you buy have SIM cards installed in them.
Unlocking a SIM is often done to change the service carrier or to remove the phone for sale.
The new owner will require an unlocked phone to install and use their own SIM card..
What happens when your SIM is locked?
Lock your SIM card with a PIN (personal identification number) to require an identification code for phone calls and cellular-data usage. … The wrong guess can permanently lock your SIM card, which means that you would need a new SIM card.
Can you unlock a permanently locked SIM card?
Originally Answered: My SIM slot is permanently locked. How can I unlock it? You can unlock your SIM card on your own, however, by typing in a PIN unlock key. Your carrier can provide you with the unique PUK code for your device.
Can you unlock a SIM locked phone?
Simply insert a SIM card from another carrier (you’ll be able to get one free from a phone shop or by ordering one online) and see if the name of the network appears on your handset. If it does and you’re able to use your phone, it’s unlocked.
What does Network locked SIM mean?
Network Lock If you originally received your device from one network provider and your new SIM card is from a different network, the original network provider may have locked the device to their network.
What do I do if my SIM is locked?
The SIM card on your mobile phone will become locked if you enter an incorrect personal identification number (PIN) three times. To unlock it you must reset your PIN by entering your SIM card’s unique unlock key (also called a PIN unblocking key or PUK).