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 ...

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.

Does your phone say "No SIM," "No SIM Card Installed,” or "No SIM available"? Here's what that means and how you can fix it.

A SIM card stores your subscriber identity data, which is needed to connect to a carrier's network. But do you still need one in 2025?

Since the “SIM Card not inserted” error is not supposed to occur when the phone is in factory state, it’s a helpful way to determine if the problem is software- or hardware-related.

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.