wireless handsets
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2015 ◽  
Vol 46 (6) ◽  
pp. 496-505 ◽  
Author(s):  
Ali Kourani ◽  
Emad Hegazi ◽  
Yehea Ismail

2008 ◽  
Vol 69 (4) ◽  
Author(s):  
Rob Frieden

Most subscribers in the United States acquire a subsidized handset when they activate or renew wireless telephone service. In exchange for purchasing a handset below cost, these customers must commit to a two-year service term with substantial financial penalties for early termination, and they must accept carrier-imposed limitations on the use of their handsets. Wireless carriers typically lock subscriber access to one carrier and lock out or thwart unaffiliated providers from providing content, software, and applications to these handsets. Limitations on the use of wireless handsets juxtaposes with the Carterfone policy established by the Federal Communications Commission (FCC) forty years ago, which requires all telephone companies to allow subscribers to attach any technically compatible device. Consumers take for granted the right to attach any device to a network that is “privately beneficial without being publicly detrimental.” Only recently have some wireless subscribers come to understand the costs of not having complete freedom to use their handsets. Technically sophisticated users have resorted to “selfhelp” strategies to override carrier locks at the risk of permanently disabling (“bricking”) the handset.


2008 ◽  
Vol 56 (4) ◽  
pp. 1155-1162 ◽  
Author(s):  
RongLin Li ◽  
Bo Pan ◽  
Joy Laskar ◽  
Manos M. Tentzeris

2007 ◽  
Vol 34 (3) ◽  
pp. 194-196 ◽  
Author(s):  
Christopher R. Poirier ◽  
Robert S. Feldman

Individual response technology (IRT), in which students use wireless handsets to communicate real-time responses, permits the recording and display of aggregated student responses during class. In comparison to a traditional class that did not employ IRT, students using IRT performed better on exams and held positive attitudes toward the technology. IRT appears to be a promising technology for increasing active learning in the classroom and enhancing students' mastery of course content.


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