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The issue of iPhone 11 not recognizing SIM card may stem from causes such as accidentally enabling airplane mode, software system conflicts, loose SIM tray installation, or using a network-locked iPhone. Regardless of the cause, iPhone 11 SIM error, invalid SIM, unsupported SIM will cause inconvenience for users during device usage.
Compilation of Causes and Solutions for iPhone 11 SIM Recognition Issue
Fixing iPhone 11 SIM Issue
Method 1: Check the SIM Tray.
Loose or misaligned SIM tray installation is the primary cause leading to iPhone 11 not recognizing the SIM. You need to remove the SIM tray from the device to check if the SIM card is inserted correctly and snugly, then reinsert it. Power off and restart the device to see if the iPhone 11 SIM recognition issue is resolved. If not, proceed with the following methods below.
Method 2: Check Airplane Mode
When Airplane Mode is enabled, it means you cannot receive or make calls to others. This may lead you to believe that your iPhone 11 is experiencing a SIM recognition error. To turn off Airplane Mode, you can do either of the following:
+ Swipe down the iPhone 11 screen from the top -> Locate the airplane icon. If this icon is lit, it means the function is enabled, and you need to tap to select the icon to turn it off.
+ Access Settings ->Airplane Mode ->Slide the toggle switch to the left to turn off this function.
Method 3: Network Settings Reset
During your usage of the iPhone 11, you might have accidentally configured some network settings, leading to errors and issues, which can result in the iPhone 11 not recognizing the SIM card. Therefore, you need to reset the network settings to restore them to their default state. Here's how you can do it:
Settings -> General -> Reset -> Reset Network Settings -> Select Reset Network Settings again to confirm.
Method 4: iOS Update
Updating to the latest iOS version (if available) is also a quick 'fix' for the issue you're experiencing. For software-related issues on the iPhone 11, such as SIM not recognized, invalid SIM, or unsupported SIM, updating to the latest version can address and fix these issues. To check if your iPhone 11 has a new update available, follow these steps:
Settings -> General -> Software Update
Method 5: Factory Reset
If after trying the above 4 methods the iPhone 11 still fails to recognize the SIM card, then you should perform a factory reset for the device. This method will erase all data on your iPhone 11: applications, photos, videos, settings... Before proceeding with this step, make sure to backup your iPhone data to avoid losing important information. To perform a factory reset, follow these steps:
Settings -> General -> Reset -> Erase All Content and Settings
Method 6: Other Troubleshooting Methods
+ Check Signal Strength: Your phone might be experiencing issues due to weak or no signal coverage in your current location. Move to areas with better signal reception to continue using your device.
+ Check the SIM Card: The issue you're facing could be due to a faulty, damaged, or incompatible SIM card. Verify if the SIM card works normally by inserting it into another mobile device.
+ Use International Version of iPhone: Currently, locked network iPhones are facing issues with SIM adapters. Most SIM adapters available on the market have already been patched by Apple, and inserting a carrier SIM card may result in SIM recognition issues or, if recognized, unstable and weak signal.
The article above by Mytour.vn has introduced and guided you on how to fix the iPhone 11 SIM recognition issue. If you're experiencing issues with automatic Wi-Fi connection on this phone, you can refer to the Fix iPhone 11 Automatic Wi-Fi Connection Issue guide to resolve it.
https://Mytour.vn/sua-loi-iphone-11-khong-nhan-sim-26229n.aspx
Wishing you success in implementing the methods above.
