A SIM card that doesn't work can cause a lot of problems. Here's how to fix the "No SIM card" error on your Android phone.

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.

Learn how to fix SOS and No Service messages on your Android smartphone by reading this guide.

Push the pin in, the tray should pop out and you can load the needed card into the tray. The tray closest to the power button is for your network SIM card from your wireless carrier.