When an Android phone shows “Not Registered on Network,” it means the device is unable to communicate with the carrier’s ...

Imagine trying to call someone urgently from your Android device only to be greeted by the error message "SIM card not detected." This error means that your device is ...

Google Fi subscribers are having issues with their SIM cards failing. The tech giant has now acknowledged the issue. Some subscribers are receiving a $60 bill credit applied to their account. Are you ...

Google Fi Wireless, the lesser-known telecom service provider in the US, has cellular service operational in the country. It offers decent plans for wireless communication and internet. Some Google Fi ...

Some owners of Apple's new iPhone 4S have been hit with SIM card error messages, even if they are connected to a CDMA carrier that does not use SIM cards. One reader ...