Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone ...

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...

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 ...

Security is one crucial issue to we need to pay attention to due to the unsafe environments we live in. Most people have had their phones stolen at some point. And those stolen phones had their bank ...

Since last week’s leak, it’s been clear that Android Q is going to include some positive changes for Android going forward, like system-wide dark mode and new permissions settings. Unfortunately, it’s ...

All you brand new Sprint iPhone 4S customers who thought you’d actually be able to use the full dual-mode GSM/CDMA worldphone capabilities of your fancy new Apple handset when traveling abroad, think ...

The new Samsung Galaxy Note 5 requires a nano SIM card for you to place calls, access the Internet, download applications, and share photos over your network service ...