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).
How do you unlock a locked SIM?
How to Unlock Any SIM Card
- Contact your cell-phone carrier to obtain the PUK Code. The PUK Code is retained by the carrier who supplied the SIM card. …
- Attempt to unlock the SIM card using the phone. …
- Enter the PUK code when prompted by the phone.
- Enter a new PIN number of your choice when prompted by the phone.
Can I still use my phone if my SIM is locked?
It’s simple to find out if your phone is locked. 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 is the advantage of SIM lock?
Your sim card is your identity. Locking a sim card protects your identity where no one can access it without knowing the various codes or have the exact biometric pattern of your fingerprint. Without a SIM card, a GSM phone won’t be able to tap into any mobile network(except emergency calls-911, 211 etc.).
Can you unlock a permanently locked SIM card?
To unlock your SIM Card, reset the PIN by entering your SIM Card’s unique PUK (PIN Unlock Key). Note: Entering an incorrect PUK (PIN Unlock Key) 10 times will permanently lock your SIM Card. If the SIM Card becomes permanently locked, you will need to swap it for a new SIM Card.
What do you do if you forget your SIM PIN?
In fact, there’s no way to reset a SIM PIN at all. Once you’ve chosen one, you’re stuck with it if you’ve forgotten it. You only have three attempts to unlock your SIM card via PIN. If you input the wrong SIM PIN three times, your SIM card will be locked — cutting off access to voice and data.
What happens if you take out your SIM card and put it in another phone?
When you move your SIM to another phone, you keep the same cell phone service. SIM cards make it easy for you to have multiple phone numbers so you can switch between them whenever you like. … In contrast, only SIM cards from a specific cell phone company will work in its locked phones.
What happens if I put someone else’s SIM card in my phone?
Originally Answered: What happens when you use someone else’s SIMS card and then put yours back in? Most Android phones will allow you to do that. However if the Android phone has sign-in or a password taking the SIM card out and putting in another sim card will lock the phone.
How do you lock your SIM on iPhone?
Lock your SIM card with a PIN (personal identification number) to require an identification code for phone calls and cellular-data usage.
Turn your SIM PIN on or off
- If you have an iPhone, go to Settings > Cellular > SIM PIN. …
- Turn on your SIM PIN or turn it off.
- If asked, enter your SIM PIN. …
- Tap Done.
How often should a SIM card be replaced?
How often should a sim card be replaced? After on year, two years or probably after five years. Don’t get this twisted even if you bought a brand new phone.
What are the disadvantages of a SIM card?
One of the biggest disadvantages of it is the battery life. Having two SIM cards means burning more battery power. This is why these mobile phones are needed to be charged almost regularly. Many users of mobile phones with two SIM have complaint that they face network problems.