iPhone and iPad

How to fix No SIM card on iPhone? Phone Says “No SIM” Card

Are you getting the message “No SIM card found”? Looking for a way to fix the “No SIM” card on iPhone?

Well, there are some easy steps you can try to fix it completely. And these methods apply to iPhones, iPads, tablets and even Android Devices. Today, at DigitalGyan, we will go through step by step process to “fix No SIM card on iPhone” completely. But first, let us learn what a SIM card is and why you are facing this Issue.

A SIM card is one of those items that you frequently forget about until it stops operating. Perhaps this is due to its tiny size and concealed placement.

With it, your iPhone is a stunning piece of contemporary technology that can make calls to distant locations, send SMS, and easily access the internet in remote locations.

fix no sim card on iphone

What is a SIM Card?

Simply, your iPhone is a phone because of a SIM card. The SIM card in your phone—short for subscriber identity/identification module—is a small memory card that houses vital identifying data like your phone number, billing information, and cellular carrier.

It lets you make and receive calls, send and receive messages, access cellular data, and connect to your carrier’s mobile network. However, such operations essentially stop when a SIM card is defective or isn’t recognised.

Why Does My Phone say NO SIM found?

SIM cards are small, difficult objects, as anybody who has ever attempted to insert a SIM or other tiny memory card into its tray knows.

Nevertheless, they are incredibly informational and hence powerful. As a result, a variety of situations might make your iPhone display the “Invalid SIM” notification. These may consist of:

  • An improperly positioned SIM card or tray
  • a malfunctioning system
  • harm to a SIM card
  • faulty software upgrade

Sadly, other than a lost or broken SIM card, it’s not always easy to determine what caused the “No SIM” card issue on your iPhone.

How to fix No SIM card on iPhone?

Working through the fastest potential remedies first will make dealing with an invalid SIM card easier, therefore we advise doing the below troubleshooting procedures in that order.

Verify That Your Plan Is Active With Your Carrier

Even though it might seem obvious, do you presently have a plan with a cellular carrier? If not, you won’t be able to use a mobile network to send messages, make calls, or do any other actions.

Similar to the last example, if it has been a while since you used the aforementioned SIM card or paid your mobile bill, your carrier may have temporarily or permanently cancelled your number.

Make sure your phone number is registered and in good standing by checking your carrier’s app or getting in touch with them directly.

Enable and disable Airplane Mode

One of the quickest fixes for a variety of network-related issues, including a finicky SIM card, is toggling your iPhone’s cellular data. Simply launch Control Center and toggle Airplane Mode on and off to complete this quickly.

Restart Your iPhone

Try turning it off and back on again, a wise guy once advised me. Sometimes a simple software issue might make your SIM card seem invalid.

This tried-and-true troubleshooting advice may be all your iPhone needs to detect your SIM card, regardless of whether you need to force restart, just restart, hard reset, or soft reset.

Press and hold the Volume Down and right Side keys simultaneously until you see the Power Off slider to restart an iPhone 11, iPhone XR/XS, or iPhone X.

Once your phone has finished shutting down, drag the slider again to turn your iPhone back on.

Press and hold the Sleep/Wake button (found on the top for the first-generation iPhone SE, iPhone 5, and previous iPhones and on the right side for the most current models) until the Power Off slider displays to restart an iPhone SE, iPhone 8, iPhone 7, iPhone 6, iPhone 5, or earlier.

Contact Apple Support

If following the above instructions doesn’t resolve your SIM card issue, your best course of action is to get in touch with your carrier’s customer service department, get in touch with Apple support, or visit an Apple Store.

The cost of a replacement SIM card might vary greatly depending on your cell plan and the carrier you select.

Occasionally, buying a brand-new iPhone could be the best option, especially if AppleCare still protects the one you have.

Update the iOS

On occasion, a software bug might make it seem as though your SIM card is invalid or that your iPhone is missing its SIM card entirely.

Fortunately, Apple frequently releases a new version as soon as it discovers these problematic upgrades. Go to Settings > General > Software Update, then choose Download and Install if required, to manually check for iOS updates.

Before actually installing any updates, make sure to make a backup of your iPhone just in case.

software update - fix no sim card on iphone

Check for a Carrier Settings Update 

Your carrier may occasionally provide an update to assist enhance cellular connectivity on your network, just like Apple does with iOS upgrades.

By neglecting these updates, you risk your SIM card malfunctioning and missing out on the newest features offered by your cell operator.

Connect to WiFi, navigate to Settings > General > About, and then click Update if required to check for carrier settings updates manually.

Remove and Reinsert Your SIM Card and Tray

Nearly everything an iPhone needs to operate properly depends on the delicate balancing act of a SIM card in its tray.

It’s conceivable that the SIM card has been jostled out of place or has sustained other damage if your phone recently took a crash or if the SIM tray was hastily inserted into the slot.

reinsert - fix no sim card on iphone

Simply switch off your iPhone, grab a straightened paperclip (or, if you’re an adult, the genuine SIM tray ejector tool), place it in the little opening adjacent to the tray (on the right side for the iPhone 4 and after, on the top for the others), and gently press down.

Reset Your Network Settings

A software flaw in your phone’s network settings may be the cause of the invalid SIM card warning if you’re still experiencing problems with it. WiFi, Bluetooth, cellphone data, and any VPN you might have are all covered by this.

Resetting your network settings is the simplest approach to fix this. Remember that doing this will remove any WiFi passwords you have previously stored, so make a note of any crucial passwords for subsequent use.

reset network setting - fix no sim card on iphone

Go to Settings > General > Reset > Reset Network Settings to accomplish this. Enter your iPhone’s passcode when requested, then press Reset Network Settings a second time to confirm.

Factory Reset Your iPhone

Consider doing a factory reset as your final resort if you’ve tried the preceding solutions and your phone is still having SIM card problems. It should go without saying, but before returning your iPhone to its default settings, make sure you save a backup copy of it.

do factory reset - fix no sim card on iphone

Go to Settings > General > Reset > Erase All Content and Settings to factory reset your iPhone. When asked, pick Erase iPhone after confirming your identity with Face ID, a passcode, or your fingerprint.

Try Another SIM Card

Well, you’ve pretty much done all you could to update, restart, and reset. Verify that your SIM card is not the issue before choosing the nuclear option. Go to your carrier’s store and ask for a SIM card to test with, or borrow one from a friend.

It’s reasonable to assume that your SIM card is the problem and that it’s time to get a new one if the “No SIM” or “Invalid SIM” issue disappears. If not, your phone is probably the issue. Fortunately, you have one more option to explore before giving up and raising the white flag of surrender.


Follow these instructions if you receive a warning that states “Invalid SIM” or “No SIM Card Installed.”

  • Make sure your cellphone provider has an active plan for you.
  • Reboot your iPad or iPhone.
  • Verify if your carrier has updated its settings. Activate Settings > General > About. A popup asking you to either OK or Update will appear if an update is available.
  • Put the SIM card back in the SIM card tray after removing it from your iPhone or iPad.
  • Verify that the SIM tray snaps shut securely and is not loose. It might not fit correctly if you use a SIM tray from an iPad, iPhone, or other phone makers with a different model.

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