To protect your SIM card from others using it for phone calls or cellular data, you can use a SIM PIN. Then, every time you restart your device or remove the SIM card, your SIM card will automatically lock and you'll see "Locked SIM" in the status bar.
Never try to guess a SIM PIN or PUK code.* The wrong guess can permanently lock your SIM card, and then you would need a new SIM card. If your device asks for a PIN or code that you don't know, here's what to do:
How to unlock the sim card on iphone
Your iPhone may be locked to your network provider. Unlocking your iPhone means you can use it with different network providers. To contact your network provider and unlock your iPhone, follow these steps. You can find out if your iPhone is locked by going to Settings > General > About. If "No SIM restrictions" appears next to Network Provider Lock, your iPhone is unlocked.
You may see this message on your computer or iPhone: "The SIM card inserted in this iPhone does not appear to be supported. Only compatible SIM cards from a supported network provider may be used to activate iPhone. Please insert the SIM card that came with your iPhone or visit a supported network provider's shop."
If your iPhone is considerably new then it is bound to be unlocked but if you are using an older model of iPhone then SIM swapping will end with a very disturbing message. The pop-up message will tell you that "SIM is Locked" and ask you to "Unlock the SIM". Basically, you will be stuck with that specific service provider, but no need to worry you will be able to unlock SIM card iPhone for free and you can do it yourself without even contacting your current service provider. You won't need any special equipment to unlock a SIM but a simple procedure will do. Let's have a look.
Before getting into the procedure you must know a few things about it. You must have at least once tried to change your SIM card and at that moment a message has popped up on your mobile screen. It informs you about the status of your SIM card and that is "SIM Locked".
At that moment you had no idea what to do and how to unlock iPhone network. So, you just tapped on "OK". Unfortunately, for you nothing happened, the SIM card is still locked. Thankfully, there are ways to get that dialog box back. But before we go there you have to know about the iPhone SIM card PIN. You have to know the current PIN of your SIM card before you can proceed further. You can easily know the PIN by looking at the documents given to you by the Service Provider the moment you bought the SIM card. There is also a PIN code known as the "Super PIN Code" it is basically able to unlock the SIM if you have locked it by putting the wrong PIN over and over again.
If you want to know how to unlock SIM card on iPhone then you should use the most straightforward method to achieve that feat, which is the Phone App. You will find the Phone App in your iPhone it will help you get the dialog box back so that you can use it to unlock the SIM.
So, you should start by making a call from your iPhone, the dialog box should return at this point. You need to tap on "Unlock" and provide the PIN of your SIM card along with it. The SIM will be unlocked. Also instead of calling a real number you can just put random numbers and hit the call button.
Another way you can easily unlock the iPhone's SIM card, you can simply go to Settings on your iPhone and change things from there. So, before you ask how to unlock iPhone to any carrier, just follow the instructions below:
Mainly, you need to know that these days all the iPhones come with unlocked SIM cards, you can easily swap the SIM, but the trouble starts if you are using an older model. You won't be able to change the SIM card and message will pop-up telling you that the SIM is locked. But there is no need to worry anymore as proper ways to unlock your SIM is elaborated in this article and the best part is that you won't even have to talk to the service provider. Also if you have locked yourself out of your iPhone then you can use the third-party tool Tenorshare 4uKey to unlock iPhone passcode. It is a stellar unlocker tool which can unlock any type of passcodes from 4-digit, 6-digit, numerical, Touch ID, Face ID etc.
The term "locked" typically refers to a device that can only be used on the Sprint network and cannot be activated on another carrier's network. An "unlocked" device is no longer locked to Sprint's network and the user may attempt to activate it on another carrier's network.
Once you meet the requirements outlined in the Unlock Policy, Sprint will automatically unlock your active eligible SIM unlock-capable device if it is technically possible for us to do so. If your device does not support remote unlock, we will send a notification to the device once it becomes eligible with next steps for completing the unlock process.
For SIM unlock-capable devices, Sprint will unlock the SIM slot for devices that are eligible under the Unlock Policy outlined at sprint.com/unlock. If a device is eligible to be unlocked, Sprint either remotely unlocks the device, or sends a notification to the device with next steps to complete the unlock process if it is not technically possible for us remotely unlock it. If you believe that your postpaid device is eligible to be unlocked and want to request a SIM unlock, contact Sprint Customer Care by dialing *2 from your Sprint mobile device or call 888-211-4727.
It is important to note that not all devices are capable of being unlocked. Specifically, devices and device models manufactured prior to February 2015 generally cannot be unlocked to accept a different domestic carrier's SIM for use on another domestic carrier's network. Sprint has no technological process available to do this.
Many devices that have been manufactured for Sprint simply are not SIM unlock-capable. This is because, prior to the development of the voluntary commitment contained in CTIA's Consumer Code for Wireless Service ("Unlocking Commitment") carriers were not required to, and many carriers did not, develop their devices to be capable of being unlocked.
After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to keep using your current handset but use another network, you must unlock your phone. This means that you unlock the phone to accept another subscriber identification module. The SIM card itself isn't unlocked.
Most cellphones you buy have SIM cards installed in them. SIM cards are memory chips used in cellular devices to store your account's information, your cellphone number, your phone book, text messages and other data. Because they contain such sensitive information, avoid removing them from the phone unless absolutely necessary.
Unless you specifically purchased an unlocked phone, your phone is likely to have a SIM lock on it. This feature prevents you from taking a particular provider's phone and using it on another network. The lock helps keep devices on their originally assigned networks. However, most devices can be unlocked using a SIM unlock procedure.
You can remove the SIM lock by performing an unlock procedure on the phone. Although the specific unlock instructions differ according to your phone model, the procedure consists of obtaining an unlock code from your existing mobile provider. You can also buy a code online if the provider is unable to give it to you. After you obtain the unlock code, you install another network's SIM card, power on the phone and then enter the unlock code when prompted.
One common reason for unlocking a phone is to use the device internationally. Most countries have their own SIM cards and you can purchase a SIM and a phone plan in a different country while visiting. In this case, you must unlock the phone and actually remove and replace the old SIM card with the new SIM card to gain compatibility on the country network.
For example, Mexico uses TELCEL service for their entire country. If you unlock your phone, you can replace the SIM with a TELCEL card while visiting and enjoy a data plan with local and even international calling at a much reduced rate. Using this system is common for long term travel where alternating service plans according to location is useful.
Once you're all paid up, head to Apple's support page to find out whether "unlocking" is a service your carrier offers. Most major carriers like AT&T, Boost Mobile, Sprint, T-Mobile, Verizon, Virgin Mobile, and Xfinity do.
If you're switching from AT&T to another carrier, you can use AT&T's convenient device unlocking portal to avoid calling customer service. This could take a few days to process. You'll be sent a confirmation once it's completed.
Once you have a SIM card from your new carrier, you can replace the card currently in your iPhone. Before you do this, backup your information to iCloud or your computer through iTunes and turn the device off.
And we are not talking about the biometric lock or password that you enter to unlock the cell phone itself. We are talking specifically about the SIM card. If by chance you forgot the PIN code and you enter it wrongly three times, your cell phone will be locked and there will be just one way of unlocking it to use it again.
As you can imagine, having all that personal and important information in that piece of plastic could be a problem if you lose your phone. Other people could see the information inside the SIM card just by inserting it into an unlocked cell phone. We hope that it never happens to you, however is always important to be prepare.
To be sure that only you can have access to the information on the card, you can use a PIN code. PIN stands for Personal Identification Number, and it is a number that gives you access to the SIM information.
Every time that you restart your phone, it will ask you for four digits. That is the PIN. When you buy a SIM card, it comes in a piece of plastic with information about the mobile carrier. There you will find the PIN code and the PUK code (later on we will talk about it). The PIN shown there is the code that you need to write when you enter the card the first time on your phone. 2ff7e9595c
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