Redmi Note 7S: Unrecognized SIM card

You have just acquired an Redmi Note 7S and when you turn it on, it displays the following error text message: SIM card not recognized. Occasionally the Redmi Note 7S does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily necessary to bring the Redmi Note 7S directly back. In truth, there are a lot of tricks to fix this problem. We will therefore find out in this tuto, what are the things to do and confirm to ensure that the SIM card is recognized on your Redmi Note 7S.unrecognized-sim-card-Redmi-Note-7S

What to do when the SIM card is not recognized on my Redmi Note 7S

Whenever the SIM card is not recognized on your Redmi Note 7S, below is a list of things that may help you determine the source of the problem, find out repairing the problem.

Clean SIM card

One of the first things to do if the SIM card is not recognized on your Redmi Note 7S is to wash it up. In fact, it may happen that dirt partially prevents the contact between the SIM card and the cellphone. 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 Redmi Note 7S

Occasionally the problem may result from the location of the SIM card. In fact, it often occurs that tiny 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 Redmi Note 7S from reading the SIM card. To fix this problem, you just need to thicken the SIM a little by gluing 1 or two pieces of tape at the back.

Test the SIM card on a different telephone

To find out if the problem comes from the SIM card, you can actually test it on a different phone and you will have your answer. If it is not recognized on other devices, you can actually modify the SIM card.

Try another SIM card on your Redmi Note 7S

Whenever the two previous steps do not give anything, it is necessary to test a different SIM card to find out in the event that the problem comes from the card. In truth, in the event that other SIM card work on the Redmi Note 7S, it is because the problem comes from the card. Otherwise, it is at the level of the telephone that we will have to look.

Check that your Redmi Note 7S is not Simlocker

In case you have tried a lot of SIM cards on the Redmi Note 7S and non-e are recognized, the telephone could be Simlocker. It indicates that the Redmi Note 7S 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 net that may do that.

Check that the problem doesn’t result from the ROM installed on the Redmi Note 7S

This part mainly concerns the people who root the Redmi Note 7S to install a ROM that is not initial. Whenever this is actually what you have done, be aware that the unrecognized SIM card problem is quite common after installing fresh ROMs. We highly recommend that you reinstall an initial ROM and re-test it.

Whenever nothing functions

Whenever all the above solutions do not work, we recommend you to bring your Redmi Note 7S and the SIM card back to 1 of your operator’s shops.