Oppo R7: Unrecognized SIM card

You have just bought an Oppo R7 and when you turn it on, it displays the following error text: SIM card not recognized. Sometimes the Oppo R7 does not recognize the SIM card and displays this message. In this case, it is not necessarily required to bring the Oppo R7 directly back. Certainly, there are several methods to fix this issue. We will consequently see in this content, what are the things to do and confirm to ensure that the SIM card is recognized on your Oppo R7.unrecognized-sim-card-Oppo-R7

How to proceed when ever the SIM card is not recognized on my Oppo R7

In cases where the SIM card is not recognized on your Oppo R7, below is a list of things that could help you determine the source of the issue, see repairing the issue.

Clean SIM card

One of the first things to do if the SIM card is not recognized on your Oppo R7 is to clean it up. Actually, it may happen that dirt partially prevents the contact between the SIM card and the 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 Oppo R7

Sometimes the issue may be caused by the tracking 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 Oppo R7 from reading the SIM card. To fix this issue, you just simply need 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 issue originates from the SIM card, you’re able to test it on another phone and you will have your answer. When it is not recognized on other devices, you’re able to change the SIM card.

Try another SIM card on your Oppo R7

In cases where the two previous steps do not give anything, it can be required to test another SIM card to find out in cases where the issue originates from the card. Certainly, in cases where other SIM card work on the Oppo R7, it can be because the issue originates from the card. Otherwise, it can be at the level of the mobile phone that we will have to look.

Check that your Oppo R7 is not Simlocker

If you have tried several SIM cards on the Oppo R7 and non-e are recognized, the mobile phone may perhaps be Simlocker. This implies that the Oppo R7 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 provide on the net that could do that.

Check that the problem doesn’t be caused by the ROM installed on the Oppo R7

This part mainly concerns the people who root the Oppo R7 to install a ROM that is not original. In cases where this is actually what you have completed, be aware that the unrecognized SIM card issue is quite common after setting up new ROMs. We recommend that you reinstall an original ROM and re-test it.

In cases where nothing works

In cases where all the above solutions do not work, we advise you to bring your Oppo R7 and the SIM card back to one of your operator’s shops.