Your Android or iOS device won’t read the SIM card for a number of reasons. The SIM card may not have been inserted properly, or there may be a software problem with your smartphone. Whatever the cause, you must act fast when your phone indicates that “No SIM card detected.”
Here are various solutions for situations where your phone is unable to recognize the SIM card.
Please take note that some of the settings might not be accessible in the same places as described below, depending on the make and model of your phone. On some phones, for instance, you might need to go to “Network & Internet -> Mobile Networks” rather than “SIM cards & Mobile Networks” to access specific settings.
- Reboot or Shut Down Your Phone
Sometimes all it takes to resolve a software issue that is the root of your SIM card error is a straightforward reboot.
For Android:
Hold down the power button until a pop-up window with a Restart option displays. To restart the phone, tap on it.
This can solve a lot of issues, but if it doesn’t resolve the “no SIM” error, you can try turning off your phone, waiting 30 seconds, and then turning it back on.
If this solves your issue, keep doing this rather than resetting your phone until a carrier settings update or an Android update is published to address the issue.
For iOS:
When “slide to power off” appears, continue to hold down the power button on your iPhone. Slide your finger from left to right across the slider to switch off your iPhone. Press and hold the power button to turn on the iPhone after it has been turned off.
On an iPhone X or newer, hold down both of the volume buttons while pressing the power button to access the “slide to power off” screen.
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- Switch Your SIM Card On
Checking to see if your SIM card is genuinely switched on is another quick fix for the SIM problem on more recent Android versions.
To do this, make sure your SIM card is turned on by going to “Settings -> SIM cards & Mobile Networks.”
This screen is also where you can check to see if the SIM card you want to use is turned on if you have a dual-SIM setup.
- Switch to Automatic Network Mode.
Another option is to switch the network mode to auto. You can accomplish this by selecting the first option, which will be LTE/WCDMA/GSM, in “Settings -> SIM cards and mobile network -> Preferred network type” (auto connect).
- Select the Appropriate Network Provider
You will undoubtedly experience the SIM card issue if the network operator you are using is not the one that is selected in your Android device’s settings. Go to “Settings -> Mobile Networks -> Automatically pick network” to make sure you have the correct one. Tap on your carrier when your Android device has finished searching and has displayed the results.
Go to “Settings -> Mobile Data -> Network Selection” on an iOS device. Here, disable Automatic network selection and choose your carrier by hand from the list that appears.
- Manually Enter Your Network APN Settings
If none of the aforementioned fixes succeed, it’s conceivable that your SIM card has entirely lost connection to the network it was meant to be joining. You might need to manually enter your network operator’s APN settings if that has happened.
To do this, navigate to “Settings -> SIM cards and mobile networks -> Access point names,” then select the “+” icon on a current Android device (9.0 Pie and later).
You’ll need to either receive the correct APN settings from your network provider to enter here, or you can check online to see if your network provider has published them. Taking a snapshot and saving your APN settings may also be a smart idea so you can immediately access them if you experience problems again.
On your iPhone, navigate to “Settings -> General -> About” to request a carrier settings update for iOS.
If an update is available, a pop-up window will appear asking for your permission to install it. If you don’t see any of these pop-ups, an update is probably not available. To confirm this, you can always get in touch with your network provider.
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- Take out The Battery and SIM card.
You can also try removing the SIM card from the SIM card tray and the battery, if it’s removable. Ensure that your device is off before you proceed. After removing everything, wait for about a minute before replacing everything.
Dropping your phone is a typical occurrence, but even if it wasn’t damaged, the SIM card might have shifted. Many people have tried adding some paper or even tape to make a tighter fit because it’s a cheap and original solution. This usually solves the issue and makes the SIM card fit snugly.
Additionally, keep an eye out for SIM trays that are slightly bent or out of place. The SIM card may not properly attach to the internal contacts of your SIM tray even with a little misalignment.
On occasion, your SIM card may be the source of the issue rather than your phone. Ask a friend of yours for their SIM card and put it in your phone to be sure. If your phone recognizes this temporary SIM card, the issue is with your SIM, which needs to be changed.
It’s very likely that your phone has a software problem if it can’t identify the replacement SIM card and there isn’t any physical damage to the phone, the tray, or the SIM.
- Try Using Safe Mode on Your Phone
Unfortunately, not all of the apps you download are friendly. Some apps may produce this mistake and do more harm than good. Start up safe mode on your smartphone.
For a few hours, stay in safe mode and check to see if the issue persists. If not, attempt to recall the most recent applications you downloaded and remove them. Leave safe mode, then check to see if the issue persists.
- The Airplane Mode Fix
It’s time to try the Airplane mode remedy after trying all of the aforementioned fundamental remedies and being certain that the SIM card is not the issue. Turn it on by sliding down from the top of your display (once or twice, depending on where you’ve put the icon).
When using Airplane Mode, you might or might not receive a warning message depending on the version of Android you have. Turn it on and let it run for about a minute. Your Android device will start hunting for a network when you turn it off, perhaps fixing the SIM card problem.
- Clear the Cache to Fix the SIM Card Error
The no SIM card problem can easily be fixed by clearing the cache on your Android device. To clear data, go to “Settings -> Storage.” A pop-up message will appear when you tap on cached data, informing you that doing so will delete the cache for all of the apps on your smartphone. To finish it, simply tap “Delete.”
There would be no need to waste time attempting various solutions if there were simply a way to identify the root cause of the no SIM card problem right away. Unfortunately, the trial-and-error approach is all you have until the Android smartphone displays a notification informing you of the cause.
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- Reset Network Configuration
You can also completely reset the network settings if you are unsure of what software issue is preventing your iPhone from detecting the SIM card. This just resets your network settings to their default state without erasing any data.
Click Reset after going to “Settings -> General -> Transfer or Reset iPhone.”
You’ll get a menu with options to reset different iOS components when you click on Reset.
Reset Network Settings by clicking on it. Your iPhone will then ask you to enter your passcode, at which point the network settings will be reset.
FAQ
Can Third-Party Apps Affect SIM Card Connectivity in A Negative Way?
It is doable. The “no SIM card detected” or “cellular data not working” errors on your iPhone or iPad could be the result of an evil third-party software on your phone. Boot your phone in safe mode to prevent any non-native apps from opening if you have any doubts. If the problem is fixed, you will have identified its underlying cause. Now all that has to be done is find the malware and remove it.
Why Does My Phone Keep Displaying the Message “SIM Card Not Detected” when I’m Going Abroad?
The network may not be unlocked, or your SIM may not be activated, as a result.
How May Contacts Be Retrieved from A SIM That Is Not Being Recognized?
You can use your Google account to back up a SIM’s data, including all of its contacts if you need to restore contacts from a SIM that isn’t showing up on your mobile device. However, you can’t use this approach until your Google account has been linked.
What Should I Do if I Dropped My Phone and It Now Displays The “No SIM Card” Error?
It may be due to corroded connections brought on by moisture if your phone was dropped in water and is now unable to identify your SIM card.
Let the phone air dry; it would be the best line of action. Contacting customer service is the next best course of action.
What Should I Do if An Update Causes My Phone to Display the Error “no SIM card detected”?
Software updates typically provide new security patches and bug fixes, thus they are beneficial. There is a possibility that the error with your SIM card is being created by the outdated data if a new update is a culprit. One at a time, try these fixes:
Restart the computer.
Put your SIM card back in.
Reset your gadget to its default settings.
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