iPhone Says No SIM Card, Invalid SIM, Or SIM Card Failure – How To Fix It

What to do if all of a sudden your iPhone says no SIM Card installed, Invalid SIM, or SIM Card failure? This is a question that bothers quite a few users, and it may appear on all iPhone models. When one of the error messages we have mentioned shows up, you can’t send or receive text messages, place calls, or use your mobile data plan. Many people want to know what causes these issues. There are a couple of reasons why these messages may appear. A glitch in the software is one of them. If the SIM card is damaged, or if it is not properly placed, you may see one of the errors. The issue may appear after an iOS update, if the device came in touch with water, or if it was dropped to the ground.

The first thing we suggest you do is to contact your carrier to make sure you have an active plan. If everything is fine and your plan with the carrier is active, try the solutions below.

See also: How To Fix No Service On iPhone 

What to do if your iPhone says NO Sim card? 

iPhone No Sim Card error is one of the most common Sim-related issues. We are going to share several effective solutions for you to try so that you can finally get rid of this annoying error message.

Source: iphonekozosseg.hu

Source: iphonekozosseg.hu

Solution No.1: Toggle Airplane Mode

Let’s start with the simplest solution. If you ever experienced iPhone Wi-Fi issues, problems with cellular data, GPS, or Bluetooth, then you know that toggling the Airplane mode can fix the issue. This simple trick may work if your iPhone says No Sim. Go to Settings, and turn the Airplane mode On. Leave it on for 15-20 seconds and turn it off.

Toggle Airplane mode


Solution No.2: Reboot your iPhone

When was the last time you rebooted your device? You know that phones can act strangely sometimes. Your iPhone says No Sim Card, even though the SIM card is in the tray. It means that for some reason your device is not detecting the card. A simple restart can fix the problem. Press and hold the sleep/wake button, and drag the slider once it appears. Once your phone is off, press and hold the sleep/wake button to turn it back on.



Solution No.3: See if your SIM card is properly placed

Sometimes, the SIM card may move a bit. Even if the card didn’t move, reinserting the SIM card is something you should definitely try. Turn off your iPhone and remove the SIM card. If there is dust in the tray or on the card, wipe it off.  Make sure the SIM card is not damaged. If it is, that is the reason why your iPhone says no sim card installed and you will have to contact your carrier for the SIM card replacement. No damages on the card? Place it back in the tray and turn your phone on.

Here is Apple’s guide on how to remove the SIM card from your iPhone.


Solution No.4: Try another SIM card

If you tried the previous solution, and it didn’t work try another SIM card. Turn off your device, remove your SIM, and place another SIM card in the tray. Power on your iPhone and see if the error message appears. If not, your SIM card is causing the problem. Contact your carrier for the card replacement.


Solution No.5: Carrier settings update

In many cases, when you update the carrier settings, the issue is gone. It is a pretty simple thing to do:

  • Go to Settings
  • Tap on General
  • Tap on About

If the carrier settings update is available, you will be asked if you would like to update then now. Tap Update.



You may also read: How To Fix iPhone/iPad Won’t Download Or Update Apps 


Solution No.6: Reset network settings

What’s next? You can reset network settings. This is a very useful solution for various connection-related issues. This will restore network settings to factory defaults, so you will have to enter your Wi-Fi passwords and pair them with other Bluetooth devices all over again.

  • Go to Settings > General > Reset > Reset all settings.
  • Enter your passcode.
  • Tap Reset all settings to confirm your action.

reset network settings


Solution No.7: Upgrade your iPhone to the latest version of iOS

Have you installed the latest version of iOS? If not, do it now. Before you start, make sure your device is charged, or connect it to a power source. Connect to a Wi-Fi network.

  • Go to Settings > General > Software Update
  • Tap Download and Install or Install Now (if you already downloaded the latest version of iOS).

Update the Software steps


Solution No.8: Restore your device to factory defaults using iTunes

First, check if you have the latest version of iTunes, and backup your data. Connect the phone to your computer via USB cable. Once it is connected, choose your device in iTunes. Find Restore in the Summary panel, and click on it. Approve it. The iTunes software will now erase your iPhone, including all your data, and it will restore your device to its factory defaults. It will also install the latest version of iOS. Your device will restart. Set up your device, and you are done.

Restore iPhone using iTunes


What to do if your iPhone says Invalid SIM card or SIM card failure?

iPhone no SIM card installed error is not the only sim-related message you may see. There are also Invalid SIM cards and SIM card failures. While the reasons for all the error messages are more or less the same, these two usually appear because the sim card has moved or because the card is damaged. If you recently pulled the sim out of the phone and the phone was turned on, you may see Invalid Sim or Sim card failure. Many users with jailbroken iPhones reported these messages. If your device is jailbroken, the only way to fix the problem is to remove the jailbreak.

Here are several suggestions on how to fix invalid sim card or sim card failure or iPhone:

  • Restart your iPhone
  • Turn off your phone and remove the SIM card. If the card is damaged, contact your carrier for a replacement. Clean the tray and the card. Put the card back into the tray, but make sure the SIM card is properly placed. Turn your phone back on.
  • Try another SIM card.
  • Update your iPhone to the latest version of iOS.
  • Restore your device to factory defaults using iTunes.


What to do if your iPhone says No Sim, Invalid SIM card, or SIM card failure after iOS update?

Every new version of iOS brings improvements in performance and security, along with bug fixes. However, it may shake your device a bit and cause some issues which usually disappear after a couple of hours once your device settles. If iPhone no sim installed, invalid card, or sim card failure messages didn’t disappear even a few hours after the update, you can try the solutions we mentioned in this article:

  • Toggle Airplane mode
  • Restart your device
  • See if the carrier settings update is available
  • Reset network settings
  • Reinsert the SIM card
  • Restore your device to factory defaults using iTunes.

If nothing works, contact your carrier or visit one of the Apple Stores nearby.


iPhone No Sim card installed, Invalid SIM card or SIM card failure after water damage

We all know water is one of the biggest enemies of any smartphone out there. If your iPhone got in touch with water, you need to turn it off first, unplug all the cables, and wipe the water off. What many of us forget to do is to pull out the SIM card. If you don’t do that, water will damage your sim card. Even if you can turn your iPhone back on and the phone works, you may notice one of the error messages. While you can try the solutions we have mentioned here, you will probably have to contact your carrier for sim card replacement.


These problems/solutions are found and effective on iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPhone 5c, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, and iPhone 7 Plus.