iPhone 6 CDMA

The iPhone 6 is a new model of the iPhone introduced after the iPhone 5c and the iPhone 5s. The iPhone 6 introduced numerous changes in both the smartphone’s hardware and software. This CDMA version of the iPhone 6, which is compatible with LTE bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, and 29, is intended for Verizon in the US.

iPhone 6 CDMA

Introduced on September 9, 2014.

Specifications

  • Processor Type: Apple A8.
  • Onboard RAM: 1 GB.
  • Storage Capacity: 16, 64, and 128 GB.
  • OS: Pre-Installed OS: iOS 8.0 (12A365). Maximum OS: Current.
  • Usage Time: Standby Time – 250 Hours. Up to 50 hours of audio playback. 14 hours of talk time on 3G. 10 hours of Internet use on 3G. 10 hours of Internet use on LTE. 11 hours of Internet use on Wi-Fi. 11 hours of video playback and 250 hours of standby time.
  • Display: 4.7” display with 750 x 1334 resolution at 326 ppi.
  • Connectivity: Built-in support for Wi-Fi. USB. Dock and headphone ports.
  • Audio Support: AAC (8 to 320 Kbps). Protected AAC (from iTunes Store), He-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2,3,4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV.
  • Rear Camera: Sony Exmor RS. 8-MP with 1.5 focus pixels.
  • Front Camera: 1.2 MP (1280×960 px max).
  • Video Support: H.264 video up to 1080p, 60 frames per second, High Profile level 4.2 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format.
  • Dimensions: 5.44 in height, 2.64 in width, 0.27 in depth.
  • Average Weight: 4.55 oz.
  • Accessories: Shipped with Apple EarPods headphones with Remote and Mic, Lightning to USB cable, and a USB power adapter.
  • Battery: Lithium Ion battery. Non-removable Li-Po 1810 mAh.
  • Color: Silver, Gold, Space Gray.

Apple Orders, Discontinuation, Price

Apple Order: MG5X2LL/A.

Apple Model Number: A1549.

Discontinuation: Still available.

Initial Price: US$199, US$299, US$399 unlocked, but with a two-year Verizon contract.

Miscellanea

  • On September 9, 2015, the gold color option and 128 GB storage capacity were discontinued by Apple. The price of the remaining 16 and 64 GB capacity options in silver and space gray were dropped to US$99 and US$199 with a two-year contract or US$549 or US$649 unlocked and contract free.

A Few Words about CDMA

CDMA is sort for Code division multiple access, and the acronym stands for  is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This metod allows several users to share a band of frequencies. To permit this without undue interference between the users, CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code).

This access method is used in many mobile phone standards. IS-95, also called “cdmaOne”, and its 3G evolution CDMA2000, are often simply referred to as “CDMA”‘, but UMTS, the 3G standard used by GSM carriers, also uses “wideband CDMA”, or W-CDMA, as well as TD-CDMA and TD-SCDMA, as its radio technologies.

CDMA is a spread-spectrum multiple access technique. A spread spectrum technique spreads the bandwidth of the data uniformly for the same transmitted power. A spreading code is a pseudo-random code that has a narrow ambiguity function, unlike other narrow pulse codes. In CDMA a locally generated code runs at a much higher rate than the data to be transmitted. Data for transmission is combined via bitwise XOR (exclusive OR) with the faster code. Each user in a CDMA system uses a different code to modulate their signal. Choosing the codes used to modulate the signal is very important in the performance of CDMA systems. The best performance will occur when there is good separation between the signal of a desired user and the signals of other users. The separation of the signals is made by correlating the received signal with the locally generated code of the desired user. If the signal matches the desired user’s code then the correlation function will be high and the system can extract that signal. If the desired user’s code has nothing in common with the signal the correlation should be as close to zero as possible; this is referred to as cross-correlation. If the code is correlated with the signal at any time offset other than zero, the correlation should be as close to zero as possible. This is referred to as auto-correlation and is used to reject multi-path interference.

The technology of code division multiple access channels has long been known. In the Soviet Union, the first work devoted to this subject was published in 1935 by professor Dmitriy V. Ageev. It was shown that through the use of linear methods, there are three types of signal separation: frequency, time and compensatory. The technology of CDMA was used in 1957, when a military radio engineer Leonid Kupriyanovich in Moscow, made an experimental model of a wearable automatic mobile phone, called LK-1 by him, with a base station. LK-1 has a weight of 3 kg, 20–30 km operating distance, and 20–30 hours of battery life. The base station could serve several customers. In 1958, Kupriyanovich made the new experimental “pocket” model of mobile phone. This phone weighed 0.5 kg. To serve more customers, Kupriyanovich proposed the device, named by him as correllator. In 1958, the USSR started the development of the “Altai” national civil mobile phone service for cars, based on the Soviet MRT-1327 standard. The phone system weighed 24 lb. It was placed in the trunk of the vehicles of high-ranking officials and used a standard handset in the passenger compartment. The main developers of the Altai system were VNIIS (Voronezh Science Research Institute of Communications) and GSPI (State Specialized Project Institute). In 1963 this service started in Moscow and in 1970 Altai service was used in 30 USSR cities.

Links

  • Want to switch to a new iPhone model? Sell your used iPhone 6 online for top dollar cash and save money: We buy your old iPhones: Sell old iPhone 6 online now.

iPhone 6 – Complete Beginners Guide, published by AppFind  on September 28, 2014. This iPhone 6 Beginners Guide covers Everything about the iPhone 6, from iOS 8 to the Control Center.

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