You have just purchased an Samsung Galaxy S4 and when you turn it on, it displays the following error text message: SIM card not recognized. Sometimes the Samsung Galaxy S4 does not recognize the SIM card and displays this message. In this case, it is not necessarily required to bring the Samsung Galaxy S4 directly back. In truth, there are several techniques to solve this trouble. We will consequently observe in this article, what are the things to do and verify so that the SIM card is recognized on your Samsung Galaxy S4.
What to do when the SIM card is not recognized on my Samsung Galaxy S4
If the SIM card is not recognized on your Samsung Galaxy S4, below is a list of things that can help you determine the source of the trouble, observe repairing the trouble.
Clean SIM card
One of the first things to do if the SIM card is not recognized on your Samsung Galaxy S4 is to clean it up. In fact, it may possibly 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 Samsung Galaxy S4
Sometimes the trouble may possibly come from the tracking of the SIM card. In fact, it often happens that small metal plugs that most of the time have to come in contact with the SIM card are a little bit relaxed. When this is the case, this prevents the Samsung Galaxy S4 from reading the SIM card. To solve this trouble, 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 phone
To find out if the trouble comes from the SIM card, you may test it on another phone and you will have your answer. When it is not recognized on other devices, you may modify the SIM card.
Try another SIM card on your Samsung Galaxy S4
If the two previous steps do not give anything, it is actually required to test another SIM card to find out if the trouble comes from the card. In truth, if other SIM card function on the Samsung Galaxy S4, it is actually because the trouble comes from the card. Otherwise, it is actually at the level of the phone that we will have to look.
Check that your Samsung Galaxy S4 is not Simlocker
In case you have tried several SIM cards on the Samsung Galaxy S4 and non-e are recognized, the phone could be Simlocker. This implies that the Samsung Galaxy S4 will recognize just the SIM card of a specific operator. In this case, you have to unlock it. You will find without a hassle a lot of provide on the internet that can do that.
Check that the problem will not come from the ROM installed on the Samsung Galaxy S4
This part mainly concerns the people who root the Samsung Galaxy S4 to install a ROM that is not original. If this is actually what you have completed, be aware that the unrecognized SIM card trouble is quite common after installing new ROMs. We suggest that you reinstall an original ROM and re-test it.
If nothing works
If all the above solutions do not work, we advise you to bring your Samsung Galaxy S4 and the SIM card back to 1 of your operator’s shops.
