Businesses that provide employees with cell phones may want to reduce costs by limiting the phone numbers the employees can call. The Samsung SGH-T619 has a Fixed Dial Number, or FDN mode, which ...

With a SIM-swapping attack, scammers hijack your phone number to gain access to apps on your phone—including banking apps.

After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to ...

Today’s Android phones are significantly more advanced than they were just a few years ago, but one thing hasn’t changed: the need for a SIM card. Every phone needs a physical or eSIM card to make ...

Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone number that identifies your device on the carrier's network, whether it's ...

SIM cards have been an integral yet forgettable aspect of owning a smartphone over the past few decades. For most users, the SIM card defines the basic commercial relationship they have with their ...

Have you ever wondered exactly how a SIM card works? We’ll help you understand why your phone needs one and what they do to keep you connected. Image: TalkAndroid Editorial Note: Talk Android may ...

A SIM card, or subscriber identity module, is a small card in your cellphone that connects you to the network. Your SIM card contains your phone number, and lets you make phone calls, send text ...

Stephen is an author at Android Police who covers how-to guides, features, and in-depth explainers on various topics. He joined the team in late 2021, bringing his strong technical background in ...