How to Fix Invalid Sim Card Android [10 Effective Solutions]

SIM Card or The (Subscriber Identity Module) is the brain of mobile phones that enable mobile users to send & receive calls & exchange text messages. It is also crucial for those who have no wi-fi connection & browse the internet with mobile data. So when you get an “Invalid SIM Card” message, it loses its all fundamental functions.

Getting Invalid SIM Card pop-up message despite having a sim in Android phones is a common problem that many Android users face. Fortunately, it can be solved in different ways but you have to apply the method that is effective & scientifically proven.

Considering that, we have come up with 10 effective methods that will help you fix the Invalid SIM Card Android issue with ease. You can even apply those methods by yourself without any expert’s help. So, without any further ado, let’s get started.

What Does Invalid Sim Card Mean?

It is one of the most typical questions that we are usually asked by many more people who have experienced the problem. Well, let us explain here broadly. “Invalid SIM Card” is a pop-up message that appears on your Android screen when a phone’s SIM card doesn’t support due to misplacement, or if the SIM card contains some issues.

Sometimes, it can also be shown due to network connectivity issues, or if you put a SIM card in any other country. We would like to assure you that, don’t get frustrated if you get the message “Sim Card Not Valid” as it is fixable & can be done by executing a number of simple methods that we have given below.

How to Fix Invalid Sim Card Android [Proven Methods]

It’s very annoying when your phone can not recognize your sim card. This error can happen for so many reasons, and it is resolvable. Below we will guide you through a few effective steps to Fix Invalid Sim Card Android. Check out all of them and see which method works for you.

1. Restart Your Android Phone

Well, among many ways to solve invalid sim card android issues, restarting your phone is probably the easiest way. It helps to solve common problems, including phone logs, glitches, crashes, and even Sim Card Not Valid. Restarting your device will help to connect your device to the network again. Here is the process you need to follow to restart your device.

Step 1: First, press and hold your phone’s “Power Button” for 3 to 4 seconds.

Restart Your Android Phone

Step 2: Now, you will see a pop-up window appear on the screen with different options, including “Restart.”

Step 3: Simply tap on the “Restart” button and wait until the process is accomplished. After restarting, check to see if the problem is fixed or not.

Restart Your Android Phone

2. Re-Insert SIM Card

Re-inserting the sim card means removing and putting back the sim, and it’ll help to fix the invalid sim card issue. That is because faulty sim inserting can lead to network connection issues. To re-insert your sim card, just simply follow the below steps.

Step 1: Before starting, turn off your device and use the Sim Ejector Tool to pull out the sim tray.

Remove the SIM Card And Battery

Step 2: Once the tray pops out, remove your SIM card from the tray and carefully re-insert the SIM card.

Remove the SIM Card And Battery

Step  3: After that, place the SIM tray gently and adequately press it and now check if the problem is solved.

3. Insert Valid SIM Card

Are you wondering Why Does My Phone Say Invalid Sim? It can probably happen if you insert an invalid sim card on your device. All you have to do is re-check the sim card and see if there is an error with the sim card or not. If yes, then simply insert a SIM Card that is valid to fix the sim card connection issue.

4. Clear Cache And Data On Android Phone

Sometimes cache can be the reason for creating several problems, including a sim card error issue. Clearing cash from your android phone will help to resolve the invalid sim card problem. Simply follow the below steps to clear cash from your phone.

Step 1: From your phone, go to the “Settings” option and select “Storage and USB,” and tap on “Storage Settings“.

Step 2:  Now, tap on “Cached data.”

Clear Cache And Data On Android Phone

Step 3: Click “Ok” and then check if the invalid sim card error issue is solved or not.

5. Toggle Airplane Mode

By enabling and disabling your phone’s airplane mode, you can fix the invalid sim card issue. When you toggle on airplane mode, your phone network system will be refreshed. Follow the below-mentioned steps to toggle on and off airplane mode.

Step 1: Pull down the “Notification Bar” or “Panel” from your phone and tap on “Airplane Mode.”

Toggle Airplane Mode

Step 2: After that, wait for 30 seconds and click again on the airplane mode to turn it off.

Step 3: Now, the device will start searching for a network, which will help solve the error issue.

6. Select Correct Network Operator

Are you facing sim card error issues after inserting it on your phone? Well, most people come across the same problem because of not choosing the correct network operator. Make sure that your current network is supported by your SIM card and your phone. Here we will show how to select the valid network operator through the below steps.

Step 1: First, go to the “Setting” option from your phone and select “Wireless & Networks.”

Select Correct Network Operator

Step 2:  Next, select “Mobile Network” and then tap on “Carrier.”

Next, select “Mobile Network” and then tap on “Carrier.”

Step 3:  From here, toggle on the “Automatic” option.

Select Correct Network Operator

Step 4: This process will take a little time, and it will automatically select a perfect network for your device.

7. Use Phone in Safe Mode

Some of the third-party apps can contain bugs, and they can cause sim card errors. So by running your phone into Safe mode, you can troubleshoot sim card error problems. Here is how you can enable or enter the safe mode from your phone.

Step 1: Hold your phone’s power button until you see “Turn Off” on the screen.

Step 2: Then tap on the “Power Off” button for 2 to 3 seconds.

Step 3: When you see a new window that appears on the screen named “Reboot to Safe Mode,” click “OK” from there.

Use Phone in Safe Mode

Step 4: Now, check if the sim card is working or not. If it works, then find out to uninstall the recently installed app.

8. Enter Network APN Settings Manually

If all the above processes do not work, it can also happen that your sim has completely lost connection with the network. So try to solve this problem manually by entering the APN network settings on your phone.  So now we will show you the process to set the network’s APN settings manually.

Step 1:  Go to the settings option and select “Wireless & Network.”

Enter Network APN Settings Manually

Step 2:  From here, select “Mobile Network” and select “Access Point Names (APNs).”

Enter Network APN Settings Manually

Step 3: Click on vertical three dots in the top-right corner and select “New APN.”

Enter Network APN Settings Manually

Step 4: Before that, contact the network provider to get the necessary APN settings information.

Step 5: Place all information perfectly and tap on the tick option. After that, restart your phone.

Enter Network APN Settings Manually

9. Do Factory Reset of Your Android Phone

Factory reset is also a useful way to solve this type of error. It will remove everything from your phone, and it will be like having a new phone with all default settings. But before doing it, do not forget to create backup files of your phone’s current data. You can easily perform this from your phone by following the below steps.

Step 1:  Go to the “Settings” and then select the “System” option from below and click on “Reset.”

Do Factory Reset of Your Android Phone

Step 2: From the “Reset” option, click on “Reset Phone” option.

From the “Reset” option, click on “Reset Phone” option

Step 3: The phone system will ask you to confirm it and click “RESET PHONE” below to start the procedure.

“RESET PHONE” below to start the procedure.

Step 4: After completing the reset process, your phone will restart automatically.  Hopefully, this will solve the invalid sim card issue.

10. Buy a New Sim Card

If your phone still shows an invalid SIM card after trying all the above methods, try buying a new SIM card. The old SIM card may have been damaged, which may need to be replaced, and this may help to fix the SIM error problem. Buy a new SIM card, insert it and check if your device recognizes it.


Invalid SIM card issue is not a new error issue that you experience. When you face or see this type of problem, then you don’t need to get frustrated. You may face Invalid Sim Card Android for plenty of reasons, and the fixing method is far easier. We have shown the most effective and proven 10 easiest ways to fix the errors. If you ever experience such network or SIM invalid issues, try the above methods that we have discussed. Hopefully, you won’t get disappointed when you fix your problem by applying those methods.

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