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A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
Over 30% of U.S. companies use Voice over Internet Protocol (VoIP) phone systems. Many switch from conventional services to realize the benefits of VoIP, including lower costs, operational ...
The laws regulating driving (or "distracted driving") may be subject to primary enforcement or secondary enforcement by state, county or local authorities. [1]All state-level cell phone use laws in the United States are of the "primary enforcement" type — meaning an officer may cite a driver for using a hand-held cell phone without any other traffic offense having taken place — except in ...
Cell phone bans, dress code changes and even the removal of mirrors are just some of the new school policies being implemented in the name of safety and better student engagement.
0G: An early cellular mobile phone technology emerged in the 1970s. At this time, although briefcase-type mobile phones have appeared, they still generally need to be installed in a car or truck. PTT: Push to talk; MTS: Mobile Telephone System; IMTS: Improved Mobile Telephone Service; AMTS: Advanced Mobile Telephone System
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Modesto students express mixed feelings about California’s upcoming school phone ban effective July 2026.