You have just purchased an Samsung Galaxy S21 and when you turn it on, it displays the following error message: SIM card not recognized. From time to time the Samsung Galaxy S21 does not recognize the SIM card and displays this message. In this case, it is not necessarily required to bring the Samsung Galaxy S21 directly back. In truth, there are many tips to fix this trouble. We will therefore see in this article, what are the stuff to do and check in order that the SIM card is recognized on your Samsung Galaxy S21.
How to proceed when ever the SIM card is not recognized on my Samsung Galaxy S21
Whenever the SIM card is not recognized on your Samsung Galaxy S21, below is a list of stuff which could help you identify the source of the trouble, see repairing the trouble.
Clean SIM card
One of the first stuff to do if the SIM card is not recognized on your Samsung Galaxy S21 is to clean it up. In truth, it may 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 S21
From time to time the trouble may result from the tracking of the SIM card. In truth, it often occurs that tiny 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 S21 from reading the SIM card. To fix this trouble, you just need to thicken the SIM a little by gluing 1 or two pieces of tape at the back.
Test the SIM card on a different phone
To find out if the trouble originates from the SIM card, you may test it on a different phone and you will have your answer. In case it is not recognized on other devices, you may change the SIM card.
Try another SIM card on your Samsung Galaxy S21
Whenever the two previous steps do not give anything, it is actually required to test a different SIM card to find out whenever the trouble originates from the card. In truth, whenever other SIM card work on the Samsung Galaxy S21, it is actually because the trouble originates from the card. Otherwise, it is actually at the level of the phone that we will have to look.
Check that your Samsung Galaxy S21 is not Simlocker
If you have tried many SIM cards on the Samsung Galaxy S21 and none are recognized, the phone could be Simlocker. It indicates that the Samsung Galaxy S21 will recognize simply the SIM card of a specific operator. In this case, you have to unlock it. You will find without a hassle a lot of offer on the net which could do that.
Check that the problem doesn’t result from the ROM installed on the Samsung Galaxy S21
This part mainly concerns the people who root the Samsung Galaxy S21 to install a ROM that is not original. Whenever this is actually what you have done, be aware that the unrecognized SIM card trouble is quite common after setting up fresh ROMs. We highly recommend that you reinstall an original ROM and re-test it.
Whenever nothing functions
Whenever all the above solutions do not work, we recommend you to bring your Samsung Galaxy S21 and the SIM card back to 1 of your operator’s shops.