You have just purchased an Vivo U3x and when you turn it on, it displays the following error message: SIM card not recognized. Sometimes the Vivo U3x does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily necessary to bring the Vivo U3x directly back. Certainly, there are a lot of techniques to fix this issue. We will therefore discover in this content, what are the things to do and confirm to ensure the SIM card is recognized on your Vivo U3x.
What to do when the SIM card is not recognized on my Vivo U3x
If perhaps the SIM card is not recognized on your Vivo U3x, below is a list of things that can help you discover the source of the issue, discover repairing the issue.
Clean SIM card
One of the first things to do if the SIM card is not recognized on your Vivo U3x is to clean it up. Actually, it may happen that dirt partially prevents the contact between the SIM card and the smartphone. To clean it, pass a small dab of cloth over it and check if it is not damaged.
Check the location of the SIM card on your Vivo U3x
Sometimes the issue may come from the location of the SIM card. Actually, it often occurs that little 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 Vivo U3x from reading the SIM card. To fix this issue, you just have to thicken the SIM a little by gluing one or two pieces of tape at the back.
Test the SIM card on a different cellphone
To find out if the issue 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 modify the SIM card.
Try another SIM card on your Vivo U3x
If perhaps the two previous steps do not give anything, it is necessary to test a different SIM card to find out in cases where the issue originates from the card. Certainly, in cases where other SIM card function on the Vivo U3x, it is because the issue originates from the card. Otherwise, it is at the level of the cellphone that we will have to look.
Check that your Vivo U3x is not Simlocker
In case you have tried a lot of SIM cards on the Vivo U3x and non-e are recognized, the cellphone could be Simlocker. This means that the Vivo U3x will recognize just 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 internet that can do that.
Check that the problem does not come from the ROM installed on the Vivo U3x
This part mainly concerns the people who root the Vivo U3x to install a ROM that is not original. If perhaps this is actually what you have carried out, be aware that the unrecognized SIM card issue is quite common after installing fresh ROMs. We advise that you reinstall an original ROM and re-test it.
If perhaps nothing functions
If perhaps all the above solutions do not work, we recommend you to bring your Vivo U3x and the SIM card back to one of your operator’s shops.
