How to Fix iPhone SIM not Supported Issue with 7 Methods

Updated Nov 30,2018 | by Joy

Is there anything wrong with the SIM card you have currently installed on your iPhone XR/XS Max/XS/X/8/8 Plus/7/6S/6? Recently, many users reported that their iPhone could not recognize the SIM card, which prevents making or receiving any calls and sending any text messages. They said that there was an error message saying iPhone SIM card not supported.

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If you are experiencing the same problem, read the following 7 methods to fix it immediately so that you won’t miss any important calls or messages.

The simplest way to fix iPhone SIM card not supported is to simply restart your iPhone. As we said in the previous articles, it can help users solve many problems like iPhone keeps asking for password, iPhone Screen Recording No Sound on iOS 12, etc.

Now, press and hold the power button until you see a popup saying “slide to power off”. Then drag the slider from left to right to turn your iPhone. After about 30 seconds, press and hold the power button again until the Apple logo appears on the screen.

Some carriers sell iPhones that are locked, which means that they can only be used on the purchased network. If you find your iPhone is locked, you can contact the carrier or third-party unlocking services to unlock your iPhone. 

If your SIM card is deactivated by the carrier, you may encounter this issue. Check if all the services have been enabled from the carrier. 

Suppose that the SIM card is indeed active, just get it replaced from your carrier and then the new SIM card will work for you. However, if the SIM is inactive, you need to make an active plan with your carrier.

To fix iPhone SIM card not supported, you need to ensure that you have updated your carrier settings into the latest version. Simply go to “Settings” > “General” > “About”. If an update is available, you will see a prompt and then select “OK” or “Update”.

Remove your SIM card from the SIM card tray and then reinstall it to your iPhone. Make sure that the SIM tray closes completely after putting the SIM card back. 

There might be a compatibility issue with your SIM card before updating your iPhone to the latest operating system. Now go to “Settings” > “General” > “Software Update”. If there is an available update on your iPhone, you will see a red option at the right of “Software Update”. Then click this icon and tap on “Download and Install” to update to iOS 12.

If you still can’t fix this issue, try to restore your iPhone via iTunes. Let’s see how to do it.

Step 1. Launch iTunes on your computer and connect your iPhone with a USB cable.

Step 2. Click on the device icon in the upper left corner of iTunes and then tap on “Restore iPhone”. 

Bottom Line: 

With the above seven methods, you are able to fix iPhone SIM not supported issue easily. If you have other better solutions, leave us a comment below. Lastly, let me remind you again that you must backup iPhone files with IOTransfer before updating to iOS 12 or restoring your iPhone.

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