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History of Cell Phones
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Fessenden demostrates a wireless radio telephone
World War 2 they used wireless radio telephones to communicate back and fourth -
First US Patent for a wireless telephone
The Patent number 887357 for a wireless phone was issued in 1908 to Nathan Stubblefeild. He applied it to "cave radio" phones and not straight to cell phone companies as it is today. -
Berlin-Hamburg Train
Hamburg and Berlin used radio telephones to communicate with trains going throught these cities. Pic Link
http://t1.gstatic.com/images?q=tbn:ANd9GcSBKrPqXV04AqxPilaM8sFP9htM1Nkg1UwLz0uFDILcEfysX34&t=1&usg=__eksnZuZyuw0Fv-JuYZAQp9B7CU0= -
Zero Generation of Mobile Phones
Weren't really mobile phones since they couldn't change an automatic channel frequency. Pic Link
http://t0.gstatic.com/images?q=tbn:ANd9GcTcBENCdiNXiHkDIS4S8wS53dsaUr0QzcKj72okIDVPTpTM0O0&t=1&usg=__FcMLxkcibnFrSlD1OCEWqZgV8gs= -
Cells for Mobile Phones
Cells for phone base stations were invented in 1947 was further developed by Bell Labs. Pic Link
http://t0.gstatic.com/images?q=tbn:ANd9GcRHKpeNqmyyhdeljRGFCSOHg512rX8ESLFhT08Hnupb__taqc0&t=1&usg=__9PvUqLE3U66jxd10jTTClqt1RRo= -
First Call on Handheld Mobile Phone
Motorola is considered to be the inventor of the first hand held phone in a non vehical place. Pic Link
http://t1.gstatic.com/images?q=tbn:ANd9GcQywpaV0fkQNpF_IB_aZOEFwBa4mgdWtLwhx6UNUatNgZI522I&t=1&usg=__6JmEjM67HTA5obuAfOk-knpNQQ0= -
First Commercial Network
First Commercial Network was launched in Japan Pic Link
http://t2.gstatic.com/images?q=tbn:ANd9GcTORFEaZx-RR-9aUJ2zzCX_KcGoSLLOHtc-JbN_Hi6HvuzuO4g&t=1&usg=__Nh7NmDdChUdxrpwyZni9j_Pa_IY= -
Nokia's First Mobile Phone
The first phones were boxy and big. It was originaly made for use in cars. Pic Link
http://t0.gstatic.com/images?q=tbn:ANd9GcTLEd09fmnfYBAHkDhnZLkDzYHa2Tiv-zN7swnm0VOiKJ7LIe8&t=1&usg=__UoRL478vOxySFfUIKKaxHuf6krY= -
Bell invents Call "Handoff"
This lets people go through several calls during the same conversation that they were originaly in. Pic Link
http://t0.gstatic.com/images?q=tbn:ANd9GcTCI7G4bOGE_cfr8KG9NHZO2VhGtCRJ9fzdCPQbbmrrjgU7MMo&t=1&usg=__n2TMBkll2VEcfb2SA2oMthPMX34= -
Intro to 2G Phones
2G phones were classified by digital circut switched transmissions. Pic Link
http://blog.chinavasion.com/wp-content/uploads/2009/01/1g-and-2g-phones-copy.jpg
