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2. Comparison of mobile phone standards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_mobile_phone...

   In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA.

3. iPhone 3G - Wikipedia

   en.wikipedia.org/wiki/IPhone_3G

   The iPhone 3G is a smartphone designed, developed, and marketed by Apple Inc. It is the second generation of iPhone, successor to the original iPhone, and was introduced on June 9, 2008, at the WWDC 2008 which took place at the Moscone Center in San Francisco .

4. Speck Products - Wikipedia

   en.wikipedia.org/wiki/Speck_Products

   Speck cases were chosen as iLounge's iPhone Case of the Year in 2009 (CandyShell for iPhone 3GS and iPhone 3G), [15] 2010 (PixelSkin HD for iPhone 4), [16] 2011 (CandyShell Flip for iPhone 4S and iPhone 4) [17] and 2012 (CandyShell Flip for iPhone 5). [18] CandyShell Wrap for iPad 2 was named iLounge iPad Case of the Year for 2011. [17]

5. iPhone 3GS - Wikipedia

   en.wikipedia.org/wiki/IPhone_3GS

   The iPhone 3GS, stylised as iPhone 3G🅂 [a] is a smartphone that was designed, developed, and marketed by Apple Inc. It is the third generation iPhone and the successor to the iPhone 3G . It was unveiled on June 8, 2009 [ 8 ] at the WWDC 2009 which took place at the Moscone Center in San Francisco.

6. List of iPhone models - Wikipedia

   en.wikipedia.org/wiki/List_of_iPhone_models

   The backs of an iPhone 6, an iPhone 7, an iPhone 8, and an iPhone SE (3rd generation) The iPhone, developed by Apple Inc., is a line of smartphones that combine a mobile phone, digital camera, personal computer, and music player into one device. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone revolutionized the mobile phone ...

7. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   The HPA also says that due to the mobile phone's adaptive power ability, a DECT cordless phone's radiation could actually exceed the radiation of a mobile phone. The HPA explains that while the DECT cordless phone's radiation has an average output power of 10 mW, it is actually in the form of 100 bursts per second of 250 mW, a strength comparable to some mobile phones.