Why does my SIM card keep locking on iPhone?

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 I stop my iPhone from locking my SIM card?

Turn your SIM PIN on or off

1. If you have an iPhone, go to Settings > Cellular > SIM PIN. If you have an iPad, go to Settings > Mobile Data > SIM PIN.
2. Turn on your SIM PIN or turn it off.
3. If asked, enter your SIM PIN. If you’ve never used one, enter the default SIM PIN from your carrier.
4. Tap Done.

Why is my SIM card locked?

The SIM Card on your mobile device will become locked if you enter an incorrect SIM PIN three times. The default Optimum Mobile SIM PIN is “1234”. To unlock your SIM Card, reset the PIN by entering your SIM Card’s unique PUK (PIN Unlock Key).

Why does my phone keep saying no SIM card inserted?

The reason why does your phone show no SIM card error is that your phone is unable to properly read the contents of your SIM card. This usually happens when your SIM card is not installed properly, it is damaged, or your phone has software problems after a software update.

How do you fix a SIM card that is not supported?

5 Methods to Bypass iPhone SIM Not Supported Issue

1. Verify If the SIM Card is Active.
2. Check iPhone Lock Status.
3. Download and Install iOS Updates.
4. Place An Emergency Call.
5. Set Up a New iPhone Using iTunes.
6. Joy Taylor.

Why won’t my SIM card work in my unlocked phone?

Verify if your phone really is unlocked A common solution is to turn off your phone, replace the current SIM card on your phone with another carrier’s SIM card, and turn your phone back on. If you see a message on the screen asking you for a SIM unlock code, then the phone is locked.

What is SIM lock code?

Very simply, a SIM PIN is a code, usually between four and six digits, that prevents a SIM card from being used if placed in a new phone, or even after rebooting a phone it’s currently inserted into.