What to do if your SIM card doesn't work

My mobile does not detect the SIM card, what do I do?

Problems with the SIM card on Android phones are more common than it may seem at first. Putting the card in the phone and not being recognized is a relatively common problem.¬†And quite important, because it means we can’t use the phone to call. Luckily, there are several small solutions that you can consider.

What to do if your SIM card doesn't work
Test the card on another phone

The first thing you should do is check if the problem comes from the phone or the card itself. For this, the easiest thing is that you try to introduce the SIM in a different device.

If it works this way, it is clear that the fault is in our smartphone.

In the event that the card does not work on another smartphone either, we always have the option of asking our operator for a duplicate .

Check that the SIM card is inserted correctly

It may seem absurd, but more happens than we think. If you have removed the card from the phone or have inserted a new SD, it is easy that when putting it back you make some small mistake.

Therefore, if you see that the phone does not recognize your SIM, before panicking you should check that everything is in its place. This way you will avoid problems in advance.

Make sure you have connected to the correct network

Many times, when the 4G connection does not work, it is not due to problems with the SIM card, but rather because we have selected the wrong connection type. To check it, you must enter the Phone settings and then access Networks and connections> Mobile Networks> Network type.

There you can change the type of network for which your phone is configured. And if you match the connection type to the type of card you have, the problem should be fixed.

Check the APN settings

Another option why the SIM card might not be working is that the APNs are misconfigured or are not directly configured.

To check it you will have to enter the Settings of your smartphone and then select Networks and Wireless Connection> Networks> APN. You will have to check that the settings match those of your operator.

In the event that none of these means is useful for your smartphone to recognize the SIM card, you always have the possibility of restoring the device to factory settings . This way, it will return to just the way you took it out of the box, so the problem that was preventing it from working properly may resolve itself.

Have you ever had problems with your SIM card? We invite you to tell us in the comments section at the foot of the page.