Samsung Galaxy A40: Unrecognized SIM card

You have just acquired an Samsung Galaxy A40 and when you turn it on, it displays the following error text: SIM card not recognized. Sometimes the Samsung Galaxy A40 does not recognize the SIM card and displays this message. In this case, it is not necessarily important to bring the Samsung Galaxy A40 directly back. Certainly, there are many tricks to fix this problem. We will therefore find out in this article, what are the things to do and confirm to ensure the SIM card is recognized on your Samsung Galaxy A40.unrecognized-sim-card-Samsung-Galaxy-A40

What to do when ever the SIM card is not recognized on my Samsung Galaxy A40

If the SIM card is not recognized on your Samsung Galaxy A40, below is a list of things that can help you determine 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 Samsung Galaxy A40 is to clean it up. Actually, it may possibly happen that dirt partially prevents the contact between the SIM card and the phone. To clean 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 Samsung Galaxy A40

Sometimes the problem may possibly originate from the tracking of the SIM card. Actually, it often happens that little metal plugs that most of the time have to come in contact with the SIM card are a little relaxed. When this is the case, this prevents the Samsung Galaxy A40 from reading the SIM card. To fix this problem, you just simply have to thicken the SIM a little by gluing 1 or two pieces of tape at the back.

Test the SIM card on a different smartphone

To find out if the problem originates from the SIM card, you can actually test it on a different phone and you will have your answer. When it is not recognized on other devices, you can actually change the SIM card.

Try another SIM card on your Samsung Galaxy A40

If the two previous steps do not give anything, it is important to test a different SIM card to find out in the event that the problem originates from the card. Certainly, in the event that other SIM card work on the Samsung Galaxy A40, it is because the problem originates from the card. Otherwise, it is at the level of the smartphone that we will have to look.

Confirm that your Samsung Galaxy A40 is not Simlocker

If you have tried many SIM cards on the Samsung Galaxy A40 and non-e are recognized, the smartphone could be Simlocker. This implies that the Samsung Galaxy A40 will recognize simply the SIM card of a certain operator. In this case, you have to unlock it. You will find without a hassle a lot of offer on the web that can do that.

Check that the problem does not originate from the ROM installed on the Samsung Galaxy A40

This part mainly concerns the people who root the Samsung Galaxy A40 to install a ROM that is not original. If this is actually what you have completed, be aware that the unrecognized SIM card problem is quite common after installing fresh ROMs. We suggest that you reinstall an original ROM and re-test it.

If nothing functions

If all the above solutions do not work, we recommend you to bring your Samsung Galaxy A40 and the SIM card back to 1 of your operator’s shops.