You have just purchased an Vivo S1 and when you turn it on, it displays the following error text message: SIM card not recognized. At times the Vivo S1 does not recognize the SIM card and displays this message. In this case, it is not necessarily necessary to bring the Vivo S1 directly back. In truth, there are many methods to fix this trouble. We will for that reason see in this content, what are the stuff to do and check to ensure that the SIM card is recognized on your Vivo S1.
How to proceed when the SIM card is not recognized on my Vivo S1
If the SIM card is not recognized on your Vivo S1, below is a list of stuff that can help you determine 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 Vivo S1 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 Vivo S1
At times the trouble may result from the tracking of the SIM card. In truth, it often happens that little metal plugs that normally have to come in contact with the SIM card are a little relaxed. When this is the case, this prevents the Vivo S1 from reading the SIM card. To fix 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 telephone
To find out if the trouble comes from the SIM card, you can actually test it on another 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 Vivo S1
If the two previous steps do not give anything, it is necessary to test another SIM card to find out in cases where the trouble comes from the card. In truth, in cases where other SIM card work on the Vivo S1, it is because the trouble comes from the card. Otherwise, it is at the level of the telephone that we will have to look.
Verify that your Vivo S1 is not Simlocker
When you have tried many SIM cards on the Vivo S1 and none are recognized, the telephone may be Simlocker. This means that the Vivo S1 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 offer on the internet that can do that.
Check that the problem doesn’t result from the ROM installed on the Vivo S1
This part mainly concerns the people who root the Vivo S1 to install a ROM that is not original. If this is actually what you have done, be aware that the unrecognized SIM card trouble is quite common after installing fresh ROMs. We highly recommend 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 Vivo S1 and the SIM card back to 1 of your operator’s shops.
