You have just bought an Samsung Galaxy S Duos and when you turn it on, it displays the following error text message: SIM card not recognized. Sometimes the Samsung Galaxy S Duos does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily necessary to bring the Samsung Galaxy S Duos directly back. In truth, there are several tricks to fix this problem. We will for that reason see in this tuto, what are the things to do and confirm to ensure that the SIM card is recognized on your Samsung Galaxy S Duos.
How to proceed when ever the SIM card is not recognized on my Samsung Galaxy S Duos
If the SIM card is not recognized on your Samsung Galaxy S Duos, below is a list of things that may help you identify the source of the problem, see repairing the problem.
Clean SIM card
One of the first things to do if the SIM card is not recognized on your Samsung Galaxy S Duos is to clean it up. In fact, it may happen that dirt partially prevents the contact between the SIM card and the mobile phone. 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 S Duos
Sometimes the problem may result from the tracking of the SIM card. In fact, it often occurs that small metal plugs that most of the time have to come in contact with the SIM card are a bit relaxed. When this is the case, this prevents the Samsung Galaxy S Duos from reading the SIM card. To fix this problem, you simply have to thicken the SIM a little by gluing one or two pieces of tape at the back.
Test the SIM card on another mobile phone
To find out if the problem comes from the SIM card, you can test it on another phone and you will have your answer. When it is not recognized on other devices, you can change the SIM card.
Try another SIM card on your Samsung Galaxy S Duos
If the two previous steps do not give anything, it’s necessary to test another SIM card to find out in the event that the problem comes from the card. In truth, in the event that other SIM card function on the Samsung Galaxy S Duos, it’s because the problem comes from the card. Otherwise, it’s at the level of the mobile phone that we will have to look.
Verify that your Samsung Galaxy S Duos is not Simlocker
When you have tried several SIM cards on the Samsung Galaxy S Duos and none are recognized, the mobile phone could be Simlocker. It indicates that the Samsung Galaxy S Duos will recognize only the SIM card of a specific operator. In this circumstance, you have to unlock it. You will find without a hassle a lot of provide on the web that may do that.
Check that the problem doesn’t result from the ROM installed on the Samsung Galaxy S Duos
This part mainly concerns the people who root the Samsung Galaxy S Duos to install a ROM that is not initial. If 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 initial ROM and re-test it.
If nothing functions
If all the above solutions do not work, we recommend you to bring your Samsung Galaxy S Duos and the SIM card back to one of your operator’s shops.
