Inventors Of The Cell Phone

A cell phone also known by its popular terms as mobile phone, cell or handphone is an electronic device that uses a full duplex two way radio telecommunication over a cellular network. Using popular terms we could describe the cell phone as an object that allows two ore more persons to communicate over a large area of distance.
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The inventor of the cell phone was Martin Cooper, an researcher and executive at Motorola. He successfully made the first call using a hand held phone , now known as a cell phone on April 3rd 1973, The person whom he called was no randomer, it was his own rival Dr. Joel S. Engel, a researcher at Bell Labs. The constant race between the two rivals made this innovation to come this early, back in the days. Of course, the hand held phones back then were not as delightfull as they are now, heavily weighting and big sizes was a big burden for any user. In time the sizes and the weight of the cell phones, decreased considerably up to a feather like object with the help of new technology and being able to pack an increasingly number of transistors on a smaller and smaller integrated chip. Along with this new innovation a new secondary market beginned also. Embedded gadgets for the phones added the spicy looks and increased their capabilities and features, being able to perform as a video/photo camera also or radio and even as a gaming platform, increasing its popularity amongst teenagers.


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For the constant busy man the arrival of this device was a blessing and came at the right time. The market for this luxury item at beginning had well over 12 millions clients in 1990, by the end of 2009 the number of subscriptions went to a staggering 4.5 billion, thats 300 times the number back then.


The first 1G commercially automated cellular network generation was lunched in Japan by Nippon Telegraph and Telephone Corporation or NTT in 1979, initially only covering only the metropolitan area of Tokyo, 5 years later NTT expanded the network to cover the entire population becoming the first 1G nation network. The first modern 2G technology network appeared in Finland in 1991 and it was lunched by Radiolinja now part of Elisa Group. The third generation or 3G was again lunched in Japan. The profits from this new technology were exceeding billions of dollars, thus making the number of people investing in it to increase at a fast rate. The constant pump of money in researching, in the technology of manufacturing mobile phones, leaded to its big success and helped this once luxury item now common one, to become popular amongst us. With no doubt the inventors of the cell phone had one of the biggest impact in our modern day society, allowing us to communicate with each other faster then any other technology. If there is any item out there that most of us could not perform our daily tasks, we could easily say that its the cell phone, picturing a world without this piece of technology is harder then anyone could believe.



Refurbished Verizon Cell Phones

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Having a mobile phone in your pocket is not a fad anymore, but a necessity. These small devices are capable to keep us in touch with our friends all over the world. But on a market flooded with many mobile phone models, it is may be a difficult job to choose the best unit for our needs. So, if you are looking for an accessible mobile phone, in this review we will present you some refurbished Verizon cell phones which we think that are some of the best choices available on the market.

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On the internet you will comes across many websites where you can find refurbished Verizon cell phones. For example, on the www.cellulartrendz.com you can find the BlackBerry 7250. This smart phone is available for a price of $20 and comes equipped with a charger, a USB cable, headphones and a leather cover. Launched in February 2005, this smart phone comes with many satisfactory features for an older model like this one. The case of the phone is made of resistant plastic and measures 75 x 113 x 22 mm in dimensions and 139 grams in weight. Powered by an ARM 9EJ S Core processor and 4 MB of RAM memory, this smart phone comes with a pre-installed RIM BlackBerry operating system which allows you to install many of your favorite applications, exactly as you would on a PC.

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The display of the phone is a 2.6 inches TFT one and has a native resolution of 240 x 160 pixels. Supporting up to 65K colors, this display provides good quality images with sharp colors and good contrast. The internal memory of this smart phone is quite short. It has only 32 MB of free space, enough for you to store several of your favorite files. For connectivity, the BlackBerry 7250 comes with support for CDMA 800, CDMA 1900, CDMA One, CDMA 2000, 1xRTT CDMA 2000 and 1xEV DO. For other connectivity options it offers Bluetooth and miniUSB.

Another refurbished Verizon cell phone which you can find on this website is the HTC XV5800 Verizon smart phone. This smart phone has quite a high price than the first one, costing $115. In the retail package, besides the phone you will receive a wall charger, a USB cable, headphones, a battery and the original manuals and software CD. The HTC XV5800 comes like a candy-bar unit with a case made of resistant plastic, with 54 x 105 x 15 mm in dimensions and 150 grams in weight. Launched in October 2007, this smart phone doesn’t dispose by many high-end features.

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Even so, it will impress you with its list of useful and satisfactory features. The display of this smart phone is a 2.6 inches TFT one with a native resolution of 240 x 320 pixels and support for up to 65K colors. The images are clear but with a mediocre quality of colors. For taking photos, it comes with an integrated 1.3 Megapixel camera capable of taking photos at a maximum resolution of 1280 x 1024 pixels. The internal memory of this cell phone has 256 MB of free space and there is an integrated microSD card slot which supports up to 8 GB. For connectivity, this HTC smart phone comes with support for GSM, CSD, GPRS and EDGE plus Wi-Fi, Bluetooth and miniUSB. This smart phone is powered by a 32-bit Texas Instruments OMAP 850 processor and 128 MB of RAM memory, enough for running a Microsoft Windows Mobile 6 Standard operating system without lag or interruptions.