When your phone prompts a No SIM card error, it doesn’t always implies that the SIM card or relevant component is damaged. In fact, SIM card errors in smartphones are often tied to software issues.

SIM card errors in mobile devices like a No SIM card error on your Moto X4 can be triggered by software glitches like rogue apps, malware, faulty updates, or bugs ...

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.

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead.