A carrier lock, which is featured on most cellphones, is a software code placed on a phone that prevents its use on another network. To unlock the technology, another code must be inserted on the phone. Devices that do not have the lock or code specifically advertise or state they are unlocked. Google, Android, Nexus and Apple feature unlocked devices.Continue Reading
CNET further explains how locking and unlocking affects cellphone use. Typically, locked devices operate on the GSM network. Service for the phones is provisioned with an integrated circuit known as a Subscriber Identity Module, or SIM card. If the device is unlocked, the SIM card just needs to be removed and a new SIM card added by the new carrier. Companies such as T-Mobile and AT&T are part of the GSM network and offer this feature for their customers.
On a CDMA network, phones do not feature SIM cards. Therefore, the current carrier needs to be contacted to reprovision the technology. Carriers such as Sprint and Verizon Wireless are part of the CDMA network. However, neither of the carriers are willing to reprovision devices that are made to be used on the other's network. As a result, a Verizon phone cannot be reprovisioned for Sprint use and vice versa. A GSM phone offers more flexibility in this regard.
According to PC Magazine, CDMA is an acronym that stands for Code Division Multiple Access, while GSM is short for Global System for Mobiles. Both networks represent the two primary radio cellphone systems in the United States, as of 2014. Most of the United States operates on the CDMA network. However, worldwide, GSM is the preferred network for wireless technologies.Learn more about Mobile
Unlocking an LG cell phone requires entering a network unlock code that can only be legally provided by the phone's cellular service carrier. Many LG cell phone models have a SIM card that also has to be unlocked. SIM card codes are freely available online at many places, including eBay.com.Full Answer >
The unlocking of any mobile phone is required only when moving the device from one carrier's network to another compatible network. Unlocking a mobile device is the process of receiving and entering a special unlock code from a mobile carrier in order to activate a device on other networks.Full Answer >
Mobile phone registration differs from carrier to carrier but usually requires inputting personal information along with the cellular number to set up an online account. The service provider will often send a pin that has to be used in conjunction with the registration in order to activate the account.Full Answer >
While what is best can be a highly subjective issue, both CNET and Digital Trends have listed the Samsung Galaxy Note 4 as one of the best cellphones, if not the very best. The phone, which is actually a so-called phablet, a portmanteau of "phone" and "tablet," was one of CNET's Best Phones of 2015. The technology site praised its speed and big screen as well as its stylus.Full Answer >