Vivo Y21: Unrecognized SIM card

You have just acquired an Vivo Y21 and when you turn it on, it displays the following error text: SIM card not recognized. Sometimes the Vivo Y21 does not recognize the SIM card and displays this message. In this case, it is not necessarily required to bring the Vivo Y21 directly back. Indeed, there are a lot of methods to solve this trouble. We will consequently discover in this tuto, what are the things to do and verify so that the SIM card is recognized on your Vivo Y21.unrecognized-sim-card-vivo-y21

How to proceed when ever the SIM card is not recognized on my Vivo Y21

In cases where the SIM card is not recognized on your Vivo Y21, below is a list of things that will help you discover the source of the trouble, discover repairing the trouble.

Clean SIM card

One of the first things to do if the SIM card is not recognized on your Vivo Y21 is to wash it up. In truth, it may possibly happen that dirt partially prevents the contact between the SIM card and the cellphone. To wash 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 Y21

Sometimes the trouble may possibly originate from the location 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 bit relaxed. When this is the case, this prevents the Vivo Y21 from reading the SIM card. To solve this trouble, you just 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 cellphone

To find out if the trouble comes from the SIM card, you’re able to test it on another phone and you will have your answer. In case it is not recognized on other devices, you’re able to change the SIM card.

Try another SIM card on your Vivo Y21

In cases where the two previous steps do not give anything, it truly is required to test another SIM card to find out whenever the trouble comes from the card. Indeed, whenever other SIM card work on the Vivo Y21, it truly is because the trouble comes from the card. Otherwise, it truly is at the level of the cellphone that we will have to look.

Confirm that your Vivo Y21 is not Simlocker

If you have tried a lot of SIM cards on the Vivo Y21 and non-e are recognized, the cellphone may be Simlocker. This means that the Vivo Y21 will recognize only the SIM card of a certain operator. In this case, you have to unlock it. You will find without a hassle a lot of provide on the internet that will do that.

Check that the problem will not originate from the ROM installed on the Vivo Y21

This part mainly concerns the people who root the Vivo Y21 to install a ROM that is not initial. In cases where this is actually what you have carried out, be aware that the unrecognized SIM card trouble is quite common after installing fresh ROMs. We suggest that you reinstall an initial ROM and re-test it.

In cases where nothing functions

In cases where all the above solutions do not work, we advise you to bring your Vivo Y21 and the SIM card back to one of your operator’s shops.