You have just acquired an Crosscall Core-M4 and when you turn it on, it displays the following error text message: SIM card not recognized. Sometimes the Crosscall Core-M4 does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily required to bring the Crosscall Core-M4 directly back. Certainly, there are several tricks to fix this issue. We will consequently observe in this content, what are the things to do and check to ensure that the SIM card is recognized on your Crosscall Core-M4.
What to do when ever the SIM card is not recognized on my Crosscall Core-M4
In cases where the SIM card is not recognized on your Crosscall Core-M4, below is a list of things that could help you identify the source of the issue, observe repairing the issue.
Clean SIM card
One of the first things to do if the SIM card is not recognized on your Crosscall Core-M4 is to clean it up. In truth, it may possibly happen that dirt partially prevents the contact between the SIM card and the smartphone. 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 Crosscall Core-M4
Sometimes the issue may possibly originate from the location of the SIM card. In truth, it often happens that tiny metal plugs that normally have to come in contact with the SIM card are a little bit relaxed. When this is the case, this prevents the Crosscall Core-M4 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 a different smartphone
To find out if the issue comes from the SIM card, you’re able to test it on a different phone and you will have your answer. If it is not recognized on other devices, you’re able to modify the SIM card.
Try another SIM card on your Crosscall Core-M4
In cases where the two previous steps do not give anything, it’s required to test a different SIM card to find out in cases where the issue comes from the card. Certainly, in cases where other SIM card function on the Crosscall Core-M4, it’s because the issue comes from the card. Otherwise, it’s at the level of the smartphone that we will have to look.
Check that your Crosscall Core-M4 is not Simlocker
When you have tried several SIM cards on the Crosscall Core-M4 and non-e are recognized, the smartphone may be Simlocker. This means that the Crosscall Core-M4 will recognize only the SIM card of a certain operator. In this circumstance, you have to unlock it. You will find without a hassle a lot of offer on the internet that could do that.
Check that the problem does not originate from the ROM installed on the Crosscall Core-M4
This part mainly concerns the people who root the Crosscall Core-M4 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 issue is quite common after setting up fresh ROMs. We highly recommend that you reinstall an initial ROM and re-test it.
In cases where nothing works
In cases where all the above solutions do not work, we recommend you to bring your Crosscall Core-M4 and the SIM card back to one of your operator’s shops.
