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.

When that happens, you might see the "your phone is not registered on a network" on your screen, which means your SIM card can't connect to your wireless provider's network.

The No SIM card detected error happens due to displaced card position, software issue, or SIM network issue. Considering the different causes of the error, here are ...

Reset network settings Another troubleshooting step that you must do in this situation is to clear the phone’s network settings. This is often effective in fixing network troubles.

A No Sim Card issue is caused when your phone either fails to recognize the Sim card or can’t read any information it contains.

If necessary, you may also request a new SIM card replacement. Alternatively, you can just schedule a visit to a service center and have your phone diagnosed by a technician for hardware damage.

Learn more. Reports are showing that some DROID RAZR owners are experiencing SIM card issues that make the device unusable on Verizon's network.