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Two decades of evolution of mobile phones, from a 1992 Motorola DynaTAC 8000X to the 2014 iPhone 6 Plus. A mobile phone, or cell phone, [a] is a portable telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones (landline phones).
In parts of the world, mobile phones are banned in school settings. In France and Ontario, Canada, the use of mobile phones is banned during instructional time in an effort to improve the performance of students. [84] [85] In 2021 China banned mobile phones in schools unless students have written parental consent. [86]
Denmark does not have a mobile phone ban, but nevertheless the Danish Ministry of Education advised that mobile phones must be kept out of classrooms. Therefore, many schools up to 7th grade offer "cell phone hotels" for students to store their devices. Still, mobile phones are allowed in higher schools during breaks and free periods. [37]
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
In many countries, mobile phones are used to provide mobile banking services, which may include the ability to transfer cash payments by secure SMS text message. Kenya's M-PESA mobile banking service, for example, allows customers of the mobile phone operator Safaricom to hold cash balances which are recorded on their SIM cards. Cash can be ...
Comparison of mobile Internet access methods Common name Family Primary use Radio tech Downstream (Mbit/s) Upstream (Mbit/s) Notes HSPA+: 3GPP: Mobile Internet: CDMA/TDMA/FDD MIMO: 21 42 84 672: 5.8 11.5 22 168: HSPA+ is widely deployed. Revision 11 of the 3GPP states that HSPA+ is expected to have a throughput capacity of 672 Mbit/s. LTE: 3GPP ...
Using a mobile phone while driving can definitely have economic costs to the driver using the phone (ex. paying for costs of collision, losing pay if late to work from distracted driving, etc.). More interesting however is how a driver's mobile phone use while driving can have external effects on both other drivers' safety and other drivers ...
A mobile phone feature is a capability, service, or application that a mobile phone offers to its users. Mobile phones are often referred to as feature phones , and offer basic telephony. [ clarification needed ] Handsets with more advanced computing ability through the use of native code try to differentiate their own products by implementing ...