(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 ...

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 ...

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 ...

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 ...

BHUBANESWAR: In view of the rising cases of mobile phone thefts and consequent monetary frauds, the state Crime Branch (CB) has urged citizens to lock their SIM cards through the settings in their ...