One of the most common yet frustrating issues that iPhone users face is when their device suddenly stops recognizing the SIM card. This error, if your iPhone does not recognize the SIM card properly, can leave you without a connection to the mobile network, making it impossible to make calls, send messages, or use mobile data.
However, the good news is that this problem has a solution in most cases and for this reason we have prepared this post, where you will have a detailed guide to identify the origin of the problem and the best solutions.
Check if it is a physical problem
When your iPhone doesn't recognize the SIM card, the first thing you should do is rule out a physical problem. It's surprising how small details can often cause a connection failure.
How to inspect the SIM card and tray
Take out the SIM card
Use the ejection tool that comes with your iPhone (or a clip or earring if you don't have one on hand)The tray is usually located on the side of the device.
Check the metal contacts
Observe if the SIM card is clean and free of dust, since a minimal accumulation of dirt or grease can hinder contact between the card and the iPhone reader.
Clean the SIM card
Use a soft, dry cloth to remove any residue and is very dirty, a cotton with a little alcohol. Avoid using liquid or abrasive cleaning products, as they may damage the card.
Inspect the tray
Make sure that is not bent or damaged, since a poorly positioned tray can prevent the SIM from making contact with the reader.
Try another SIM: the classic “cross-check”
If you have access to another SIM card, insert it into your iPhoneIf this works, you'll know that the problem is with the original SIM and not with the device. You can also try your card in another phone to rule out mobile faults.
Reboot and update your iPhone
Before moving on to more advanced solutions, sometimes A reboot may fix temporary issues that cause the iPhone to not recognize the SIM card.
Follow these steps depending on the model, to be able to turn off the device, wait a few seconds and turn it back on:
- On iPhone with Face ID: Hold down the side button and any of the volume buttonsuntil the power off slider appears.
- On models with start button: Long press just the side button until you see the slider.
Update iPhone software
Many network and SIM detection related issues are solved by iOS updates.
- Go to Settings > General > Software update.
- If an update is available, download and install it.
This is relatively important as updates fix bugs and ensure that your device is compatible with changes implemented by mobile operators, not just security improvements and patches for new apps.
Check iPhone settings
If after the above steps the problem persists, the next step is to check the internal settings of the device.
Turn airplane mode on and off
Airplane mode turns off and back on your iPhone's wireless features, including the cellular network. To turn it on, the easiest way is to open the Control center sliding down (or up on older models), turn on airplane mode, wait 10 seconds and deactivate it.
Check the operator settings
Sometimes mobile operators release configuration updates that you need to install manually. To do this, go to Settings > General > Information.
If an update is available, you will see an option to update.
Reset network settings
When the iPhone does not recognize the SIM card, it may be helpful to reset the network settings to eliminate connectivity errors.
You can do this by going to Settings > General > Transfer or reset iPhone and within these options click on Resetting and select Reset network settings eiEnter your access code if requested.
This process will erase Wi-Fi passwords, VPN settings, and other network-related settings, but will not affect your personal data.
Contact your mobile operator
If after all these steps your iPhone still does not recognize the SIM card, the problem It could be related to your mobile operator.
Check the status of your line
Make sure your line is active and unrestricted, since some operators deactivate lines due to non-payment or administrative errors. A quick call to your operator's Customer Service will help you understand this.
Try a new SIM card
If your SIM is damaged, Request a replacement from your operatorMost companies offer this service for free or at low cost if it is a voluntary change.
Unlock the iPhone (if necessary)
If your iPhone is locked to a specific carrier, it won't recognize SIM cards from other companies.
You can check if your iPhone is unlocked at Settings > General > Information, looking for the Operator Lock option. If it appears as «No SIM restrictions», the problem is not the blockade.
This does not apply to any European country, since Since 2015, all iPhones sold are unlocked., but it could apply if you bought your iPhone outside the EU, so be careful with the issue of imports.
Inspect iPhone hardware
If the problem is not with the SIM card or the device settings, it is possible that the SIM reader on your iPhone is damaged. To do this, it is best to make an appointment to have it checked by a professional.
- Visit an Apple Store or authorized service center for an inspection.
- If your device is in Warranty, Apple may repair or replace the SIM reader at no extra cost to you.
- If the warranty has expired, Check the costs before authorizing any repairs, since it may be more cost effective for you to retire your iPhone.
Temporary options: use an eSIM
If your iPhone supports eSIM, you can use this alternative while you resolve the issue with the physical card.
The eSIM is a virtual SIM that works by scanning a QR code provided by your operator and which we have already talked about. on some occasions in the past and which has key advantages to overcome this problem:
- It does not require a physical card, so avoid hardware related problems.
- Allows you to use two lines (one physical and one eSIM) on compatible devices.
Now you know what to do if your iPhone does not recognize the SIM: Was the post helpful to you?
Now you know that if your iPhone does not recognize the SIM card, although it may be a pain, In most cases there is a solution.
From checking the card and tray to resetting settings or contacting your carrier, there are plenty of steps you can take before calling in a technician—and you don't have to rush to the Apple Store or your carrier's retail store.
If the problem persists after trying all of the above, we believe that the most advisable thing to do is to visit an authorized center to make sure that the iPhone hardware is in good condition, but outside of those cases, with a little patience and following this guide, You will be back online soon.
Have you had this problem before? How did you solve it? Leave it in the comments and share your experience!