What Does Invalid SIM Mean?

How do I know if my SIM card is active?

If the SIM is active, it will connect to the network and show the signal strength of the network.

It will also say GSM or 3G or 4G.

If the SIM is not active it will say something like No Service.

If you do get the connection, then final check is to call the number or make a call..

How does a SIM card get blocked?

If your SIM card is blocked, often you have entered the wrong PIN code too many times. It usually takes three to five wrong entries for your SIM to lock itself. … You may see “PIN blocked” or “Enter PUK code” on your cell phone display. The PUK code stands for PIN Unblocking Key.

How do you unblock a rejected SIM card?

How to Unblock a SIM Card If It Is RejectedHold down your phone’s power button until the device completely shuts off. … Check your cell phone’s user manual to find the specific security password and locking code for your phone model. … Enter the security password first by tapping the number keys on your phone’s keypad.More items…

Why does my phone say invalid SIM?

If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure that you have an active plan with your wireless carrier. Update your iPhone or iPad to the latest version of iOS. … Remove your SIM card from the SIM card tray and then put the SIM card back.

What does invalid SIM mean Vodafone?

Hi @andrewmay55. If you are receiving an invalid SIM message, it will mean the phone is locked to an alternative network, probably O2. If you contact O2, they will be able to provide the unlock code, you should then be able to use a Vodafone and EE SIM.

How do you fix an unusable SIM card?

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 know if my SIM card is deactivated?

put the SIM into one of your phones… if it picks up a signal, then it’s active. if it shows nothing, then it’s been deactivated, or maybe might say “Sim registration failed” or something to that nature. If its more than 120 days after the validity period of your last refill, ur sim will most likely be deactivated.

Why is my sim not working?

Your SIM card or device may be configured for your previous network and will need to be reconfigured. … Clean the gold connectors on the SIM with a clean lint-free cloth. Replace the battery and turn your phone on without the SIM. Turn your phone off, replace the SIM and restart the phone.

Why does my phone say invalid SIM card Samsung?

Invalid SIM card error may sometimes be caused by a SIM card or network bug. Try to reseat or disconnect the SIM card from the phone and see what happens. … Turn the phone back on and check for the problem.

How do I reset my SIM card?

How to Reset a Phone SIM CardInsert the SIM card into your cell phone’s SIM card slot. Place the back cover securely and turn on the phone.Access the “Settings” menu. A number of options should display for modification, including “Display,” “Time and date,” “Phone,” “Reset” and others.Click on the “Reset” option.

Can you unlock a permanently locked SIM card?

You don’t unlock a SIM card, you unlock the phone to accept any SIM card. If it is a carrier unlock it is permanent. … You can unlock your SIM card on your own, however, by typing in a PIN unlock key. Your carrier can provide you with the unique PUK code for your device.