Have you often meet the situation that your iPhone says no SIM Card installed, invalid SIM, or SIM Card failure? Honestly, many users may confuse about their iPhone always gets a popup saying that "No SIM card installed", but they don't know why dose iPhone say no SIM Card and How to fix this problem.
So, if you want to know, just follow the guide below.
Firstly, there might be the simple glitch that can be fixed after several attempts, the iPhone battery is overheated or the SIM card is dust and faulty. Those may cause the SIM card complicatedly. Thus, here is a very essential way for you to fix this SIM install error.
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Tutorial: How to Fix iPhone SIM Failure?
Solution 1. Toggle Airplane Mode
Solution 2. Reboot your iPhone
Solution 3. Check SIM Card
Solution 4. Carrier Settings Update
Solution 5. Reset network settings
Solution 6. Upgrade your iPhone to the latest version of iOS
Solution 7. Restore iPhone Device
To solve this, you just need to make sure that airplane mode is disabled in the control center.
Go to "Settings" > "General" > "About" and check for any update. If the carrier settings update is available, you will be asked if you would like to update then now. Tap Update.
back up your iPhone data and start restoring iPhone with iTunes. Otherwise, if you don't want to reset anything when restore iPhone, here you may refer on How to Restore iPhone Without iTunes?
Now you may know how to fix the problem when you meet "iPhone says no SIM" next time, just choose one solution to have a try.