LG Optimus Black: Unrecognized SIM card

You have just bought an LG Optimus Black and when you turn it on, it displays the following error text: SIM card not recognized. Occasionally the LG Optimus Black does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily required to bring the LG Optimus Black directly back. In truth, there are many tips to fix this problem. We will for that reason find out in this tuto, what are the things to do and verify in order that the SIM card is recognized on your LG Optimus Black.unrecognized-sim-card-LG-Optimus-Black

How to proceed when the SIM card is not recognized on my LG Optimus Black

In cases where the SIM card is not recognized on your LG Optimus Black, below is a list of things that can help you discover the source of the problem, find out repairing the problem.

Clean SIM card

One of the first things to do if the SIM card is not recognized on your LG Optimus Black is to clean it up. In truth, it may happen that dirt partially prevents the contact between the SIM card and the smartphone. To wash it, pass a small dab of cloth over it and check if it is not damaged.

Check the tracking of the SIM card on your LG Optimus Black

Occasionally the problem may result from the tracking of the SIM card. In truth, it often occurs that little metal plugs that normally have to come in contact with the SIM card are a little bit relaxed. When this is the case, this prevents the LG Optimus Black from reading the SIM card. To fix this problem, you simply need to thicken the SIM a little by gluing 1 or two pieces of tape at the back.

Test the SIM card on another telephone

To find out if the problem originates from the SIM card, you’re able to test it on another phone and you will have your answer. If it is not recognized on other devices, you’re able to modify the SIM card.

Try another SIM card on your LG Optimus Black

In cases where the two previous steps do not give anything, it’s required to test another SIM card to find out if perhaps the problem originates from the card. In truth, if perhaps other SIM card function on the LG Optimus Black, it’s because the problem originates from the card. Otherwise, it’s at the level of the telephone that we will have to look.

Check that your LG Optimus Black is not Simlocker

In case you have tried many SIM cards on the LG Optimus Black and none are recognized, the telephone could possibly be Simlocker. This implies that the LG Optimus Black will recognize only the SIM card of a certain operator. In this circumstance, you have to unlock it. You will find without a hassle a lot of provide on the net that can do that.

Check that the problem doesn’t result from the ROM installed on the LG Optimus Black

This part mainly concerns the people who root the LG Optimus Black to install a ROM that is not original. In cases where this is actually what you have completed, be aware that the unrecognized SIM card problem is quite common after setting up new ROMs. We recommend that you reinstall an original ROM and re-test it.

In cases where nothing functions

In cases where all the above solutions do not work, we recommend you to bring your LG Optimus Black and the SIM card back to 1 of your operator’s shops.