How can i take sim network unlock pin off my samsung s3 without it chargeing me

Samsung Galaxy S20 Ultra 5G aka Samsung SM-G988B asks for the sim network unlock pin when you are trying to use it with any other network. You can use it with any network by unlocking it`s network which can easily be done through 24x7unlockcodes.com by getting At&t Samsung Galaxy S20 Ultra 5G Sim Network Unlock Pin from there.
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Your Samsung Galaxy S3 must be restricted to some specific network. That is why it allows only emergency calls when a SIM card from some other network is inserted in. You need to unlock your Samsung Galaxy S3 to make it work with all SIM cards. You can unlock your Samsung Galaxy S3 safer and easier using unlock code. You can get the accurate unlock code for a Samsung Galaxy S3 from Unlock-Zone.com at affordable cost. Good luck.

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..............UNLOCKING INSTRUCTIONS..............
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Method 1:
1 - Switch ON your Samsung Galaxy S3 with a NOT ACCEPTED SIM Card.
2 - Samsung Galaxy S3 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Galaxy S3 shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung Galaxy S3 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Galaxy S3.
3 - Compose : #0111*CODE#.

SOURCE: MobileUnlockGuide.com

What's your current network provider?
You can remove sim lock on Samsung C5212i by using network unlock code.If you need an unlock code visit Classicunlocking.com Here you can unlock your mobile phone within a day.

Hi, if the phone is asking for SIM Network Unlock PIN or Enter Network Lock Control Key, it's possible to unlock it by USB or network codes on fastgsm.com

You can Contact your network provider and request an unlock code
Insert your new SIM card
Power your Samsung phone on then enter Unlock code.
For more details you can check at Samsung India site.
Samsung Galaxy S3 Price India Buy 3 Smartphone Features Reviews Specs

It asking for Network Unlock code...Visit the site
Onlinegsmunlock.com/samsung/rs7wp8/ get the Network Unlock code for SAMSUNG SGH A837 model phone and unlock from AT&T Network lock.Then use any GSM Network sim card in it.

You can get the Unlock code from here
Onlinegsmunlock.com and Unlock it from Network Lock....

You need samsung SGH-U800 unlock code to unlock your network phone. After you inserting samsung unlock code in your phone, you can change your sim card with any other sim card from another network.