There is no gadget, device, or even an equipment that is immune to experiencing a problem or two. Not even iPhone is immune to this. It has many problems relating to sim including the iPhone Invalid SIM, no SIM Card installed, or SIM Card failure. These issues can happen on any iPhone model that you have.
Just like any other issues that will make your phone not to recognize your sim or see it as invalid, it will stop you from a lot of things such as making and receiving calls as well as sending and receiving text messages.
Although most times such problems could be as a result of things like a bad sim or one that is not well inserted, it could also be as a result of issues with your iPhone probably due to hardware and or software issues. The good news, however, is that no matter what the problem is, fixing it is not the hardest thing that you may try to do.
Causes of iPhone Invalid SIM Card Error and Other SIM Issues
- Your sim is not properly inserted
- The Sim may be bad
- There may be a damage caused by water
- Your iPhone may need to be upgraded
- The phone itself may be bad.
- Did you drop your phone?
Ways to Fix iPhone Invalid SIM Card Error
Method 1: Flight Mode
The first thing that you want to do, once you see any issue relating to Sim on your iPhone is to switch the phone to Flight Mode and then bring it back. Simply toggling your flight mode can solve a lot of problems from sim issues to even Bluetooth, GPS, and issues with data.
To do this, you will want to go to the settings of your phone and turn on the Airplane mode. You will want to leave it for probably 20 seconds before deciding to turn it off the Airplane mode.
Method 2: Reboot Your iPhone
For many of us, we cannot tell the last time that we have rebooted our phones. If you are in that class and you are experiencing an issue with the SIM on your iPhone, you may want to reboot your device.
To do this, hold the power button and then slide the power off button to turn it off. After this, simply turn it back on. While this is a very easy way of fixing the problem, you should only do this after you have tried the first method.
Method 3: Is your SIM well placed?
Most of the time when the iPhone invalid SIM error occurs after you drop your phone, the reason behind this could simply be that the sim is not well placed. Hence, what you want to do is to eject your sim and then place it back.
See Also: 4 Ways To Manage A Cracked iPhone Screen
How to remove your iPhone SIM? It is placed at the side of your phone. Use the pin that comes with the phone and look at the side of the phone where you will see a small pin hole. Put the pin through the hole, press it, and that will eject the sim tray. Make sure you place it well and then slot back in the tray.
Method 4: Try another SIM
If after trying all the methods above you are still having the same issue of invalid SIM, it could just be that the problem is related to your SIM. What you should do in such a situation is to try another SIM to rule that out. To do this, simply eject the SIM in your phone and try another.
If you do not get the same problem, the problem may just be from your card. On the other hand, if you get a similar problem, you may decide to try the methods below.
Method 5: Reset Your Network
When it comes to connection related problems and even those related to SIM cards, resetting network may as well be another way that you can fix the issues. This will take your network setting to the factory settings and you will be requested to put in everything anew including your WiFi password and Bluetooth connections. Follow these steps to do it:
- Go to settings on your iPhone, then go to General
- Select Reset followed by Reset all settings.
- You will be requested to put in your password
- It’s time to select Reset all settings to confirm.
Method 6: Check the Carrier settings
The next thing that you want to check is the Carrier Settings Update of your iphone. This may just be another way of fixing the invalid sim issue. This will help in improving the capability of your iphone to connect to cellular network. Here are the steps to follow:
- Go to Settings -> General -> About
- Wait for 15 seconds and if a pop-up comes up, click to update.
Method 7: Check for iOS updates
It is possible that there are some updates that you have not done and that are causing this problem. As a result of this, make sure that everything including your operating system has been upgraded. Here are the steps to follow:
- Go to settings
- Now, go to General and then about
- Select About and then Software update. If there is, Click on Software Update and have it updated bytapping on Download and Install.
Other things you can do
If you have tried all the methods above and you are still unable to solve it, what you may want to do next is to contact your service provider or even visit an Apple Store.
