Although we believe that SIM card problems are not very common, the truth is that it is quite the opposite. There are several failures that can happen to us more frequently than we can expect. And it is that, like all technology, it is not free of errors. Although, luckily for us, just as different problems can appear, there are several solutions that we have to correct this series of inconveniences.
Until new technologies such as eSIM cards fully arrive, we will still have to face several inconveniences when we are going to insert the SIM . As it could be the case that the smartphone does not recognize the card, we do not have coverage, the mobile data does not work for us… For this reason, we bring you a small guide with which you can correct the 5 errors that could be quite a problem head

The most common SIM failures
As we have been telling you, the problems that we will have to face are different. Although, in the vast majority of cases, the solution will only take a few seconds. Everything will depend on the circumstances of each case, but, in general, we will be able to solve it easily. Specifically, there are a series of failures that are the most repeated when using a SIM card in a mobile, and they are the following:
- The mobile has no service.
- Place the card well.
- The SIM is not activated.
- The slot is damp or dusty.
- Is the SIM card broken?
Once we are clear about the 5 most frequent problems when we are using a SIM or it is the first time that we put it in the smartphone, it is time to know what are the solutions with which we can correct this failure.

What can we do
Now that we have known the 5 most annoying problems when we are using a SIM in a smartphone, it is time to see the different solutions that we can carry out without the help of a professional. Some of these alternatives are simpler, while others we will have to go step by step to correctly complete the method with which the problem of this accessory that gives us a signal to the mobile can be solved .
Place the SIM well
One of the first steps that we must carry out will be the simple fact of checking if we have correctly inserted this accessory into its corresponding slot. Not only could we have made a mistake when inserting the SIM in its specific space , but perhaps we have placed it upside down.
Therefore, we must open the tray and check that the SIM is in its slot and not in the microSD card slot. And, of course, we will have to see that it is well placed. We just have to manage to make it fit perfectly , making sure that the card is well leveled with the smartphone tray. To do this, you will have to be in the right position, without forcing entry at any time.

Set the network mode
It can also happen that the mobile network has not been configured correctly . So this could be causing it to not work as it should or even. Do not get to offer us mobile data in most of the time that we are using the mobile. Therefore, we must follow this series of steps:
- On Android : Go to Settings > tap on Network & Internet > Mobile networks > Network mode. And then find the automatic connection option, which we will have to check to enable the function.
- On iPhone : go to Settings> tap on Mobile data> tap on Select network. Now, you will have to touch the switch for Automatic.
activate the card
When they give us the smartphone SIM for the first time in a store or if it is delivered to us at home, we will have to know if the company has enabled the new card with our telephone number. Basically, because on some occasions we will not have it active and this will cause it to not work.
In these cases, it will not be our problem or the mobile, so we will have to call our operator to activate the SIM card or we can do it ourselves from the customer area that the company has in its app for smartphones or, also , on the website, so that we do not have to go personally to the store.

Try the SIM in another phone
Another of the first steps with which we can see if the SIM has been completely damaged, especially after making sure that it has been activated, is well placed and, above all, has been configured correctly, will be to try said card in another smartphone . In the event that it is a free mobile, there will be no problems, but if it is not, we will have to make sure that it is from the same operator. Now, if we have inserted the card in another phone and if it has worked, we will have to do the following with our smartphone:
- Restart the mobile.
- Update phone software.
In the event that it has not worked either, it will mean that the SIM has surely been damaged . To get rid of doubts that it was not the inbox, his thing will be that we try another card on our smartphone that works for us. In this way, we will quickly know if it is a matter of the card or the mobile itself.