There are people who just won’t use a PIN code on their SIM card. Maybe you’re one of those users, or maybe you just want to change your SIM card’s PIN code. Either way, we’ve got you covered.

First, go to Settings in your Android device’s main menu.

In the Settings menu, choose Security, then Set up SIM card lock.


First, here’s how to disable the SIM card PIN. All you have to do is to uncheck the box next to Lock SIM card, and then confirm the change by inputting the current PIN code. That’s it!

To change the PIN code, click Change SIM PIN. Then, you’ll have to input the current code, followed by the new code – twice, so that you’re sure it’s verified.

There you go! You’ve just changed your SIM PIN code.
And in case you need to do so, here’s how to set up a screen lock on your Android device.

this kind of tips are basic, and every body knows how to do this, do not post such type of posts, like how to clear android market history, how to check your android software version.
Thanks for reading pakwing!. Not ALL of our readers know how to do everything on Android. We have readers who are beginners and experts alike. We want to accommodate everyone.
I actually wrote this tip after a couple of people asked me how to do it, so I guess not everybody knows how to do these things. Or maybe some people are just too lazy to look. In both cases, it could be helpful.
You aren’t right. I for one have forgotten how to remove the PIN-code request, and after a Google search found this post very useful.
Thanks! Great to hear that!
how to unlock it? i tried and it wont let me uncheck the box :/
Same with mine Kai, my android suddenly locked sim card. Any sim card cannot be used to the android, and the simcard which locked in the android can be used in other phone.
Please, who ever know how to solve this problem ?
If the card works in another phone, it must be something related to your Android device. You could try to master reset it and try after that (but you’ll lose all data in it).