These are proven fixes you can use if you’re looking to resolve the “No SIM card detected” or “No SIM card installed” issue on your iPhone or Android smartphone.

If your phone suddenly won't recognize your SIM card, don't panic. There are a few things you can do to try and resolve the problem. Here's what to do.

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?

10. Test the SIM Card in Another Phone Verify if the SIM card is functional by inserting it into another phone: Use a spare phone to check if the SIM card can connect to the network.

When a mobile payment is made using a SIM card with a secure element, the NFC reader communicates directly with the secure element and no Android application is involved in the transaction at all.

An eSIM or embedded SIM card is a new technology. It is the virtual or digital version of the traditional data SIM card. Fortunately, if you have one of the last-gen or latest Android phones ...