If your Android phone is showing a "No SIM Card Detected error", then you can't connect to your wireless carrier network. Here's how to fix it.

SIM card replacement. It’s possible that your SIM card is damaged so your device is no longer able to read it. In that case, a new SIM card replacement would be necessary.

If you suspect that the problem is not the SIM card but rather due to a complex system error, contact Samsung Support for other options and official recommendations.

Can the SIM Card Affect Reception on an iPhone?. The Subscriber Identity Module, or SIM, used with GSM iPhones does not affect network reception; however, if you're unable to connect to the ...

Your SIM card might not be supported The SIM card in your device may not work with the iPhone. Activation couldn’t be completed There might be issues with your internet connection or the iPhone ...

Google Fi has internally released fixes for the SIM card issues that several subscribers were facing, and is also sending $60 bill credits.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.