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New members, (why even me in the beginning!) go nuts over technical jargon that they may not fully follow. I am posting this topic with a view to help them comprehend better and understand CDMA which I feel is not given due appreciation. Post the additional essential details here but lets spare the argument on GSM v/s CDMA Experienced members kindly view this as a venue to refresh and share updated info. CDMA operators in India CDMA (code division multiple access) is a digital mobile telephone standard which takes a different approach to the other, competing standards: GSM (Global System for Mobile Communications) and TDMA (Time Division Multiple Access). Where GSM and TDMA divide the available bandwidth into 'channels' using a combination of frequency bands and time-slices, CDMA spreads the signal over a wide bandwidth, identifying each channel using unique digital codes. This means it can provide greater bandwidth efficiency, and hence a greater potential number of channels. Traditional uses of spread spectrum are in military operations. Because of the wide bandwidth of a spread spectrum signal, it is very difficult to jam, difficult to interfere with, and difficult to identify. This is in contrast to technologies using a narrower bandwidth of frequencies. Since a wideband spread spectrum signal is very hard to detect, it appears as nothing more than a slight rise in the "noise floor" or interference level. With other technologies, the power of the signal is concentrated in a narrower band, which makes it easier to detect. The narrow band is also more prone to interference than the spread-spectrum of CDMA. Increased privacy is inherent in CDMA technology. CDMA phone calls will be secure from the casual eavesdropper since, unlike an analog conversation, a simple radio receiver will not be able to pick individual digital conversations out of the overall RF radiation in a frequency band. TDMA (time division multiple access) and GSM systems have to add an extra stage of encryption to the signal to ensure privacy, whereas encryption is inherent to the CDMA system. The 1× Evolution-Data Optimised, which is abbreviated as EV-DO or 1× EV-DO, is a wireless radio broadband data standard. It has been adopted by a number of CDMA mobile telecommunications service providers across the world, particularly in the USA, South Korea, Japan, eastern European countries, Australia, Canada, New Zealand and spreading in our very own India The technology was first standardised by 3GPP2 in 2000 as part of the CDMA2000 standards. Qualcomm started to develop EV-DO in 1999 in a bid to produce a 2Mbit/s downlink for stationary communications, according to the requirements of IMT-2000. Originally the DO of the standards acronym stood for 'data only'. However, after being ratified by the International Telecommunications Union (ITU), the 'O' was changed to 'optimised' since 'only' had negative connotations for marketing the technology. EV-DO technology is a direct evolution of the 1× (1×RTT) air interface standard, with its channels carrying data traffic only. HOW DOES IT MATCH UP? In comparison to GPRS and EDGE standards, which have been widely adopted by GSM networks, the 1× EV-DO capability of enabled CDMA2000 networks is much faster. It provides mobile devices (handsets and wireless modem air cards) with air interface speeds of up to 2.4576Mb/s with EV-DO Rev. 0 and even faster speeds of 3.1Mb/s with Rev. A (data only rev A, affectionately known as DORA). Only devices fitted with 1xEV-DO capable chipsets can take advantage of the higher speeds. High speed downlink packet access (HSDPA) is a rival technology for wide band code division multiple access (W-CDMA) networks. HSDPA has the advantage over EV-DO of being able to maintain voice and data channels simultaneously over a single pair of frequencies. The system has some real advantages over WiFi, including the fact that it is always on with seamless roaming. Additionally, the signal can travel on the same cell sites as mobile phones, can download and run video clips in real time, there is no 300ft range from the cell tower or 'hot spot' and there are not so many security issues. DEPLOYMENT AND TECHNOLOGY When deployed alongside a voice network, 1× EV-DO requires a separate radio channel of 1.25MHz. The first revision of the standard was 1x EV-DO Rev. 0 and this is now being superseded by 1× EV-DO Rev. A In addition to the increase in the maximum downlink rate from 2.4576Mb/s in Rev. 0 to 3.1Mb/s, EVDO Rev.A also has a 12-times improvement in the maximum uplink data rate, from .15Mb/s to 1.8Mb/s. EV-DO REVISION B Even Rev. A is now due to be superseded, with the wireless communications market constantly striving for better and faster services. 1× EV-DO Rev B (DORB) specifications have now been developed. EVDO Rev. B is the evolution of Rev. A and in addition to all that is provided in Rev A, provides additional enhancements such as: higher rates per carrier (up to 4.9Mbps on the downlink); higher rates by bundling multiple channels together (this can enhance user experience and enables new services such as high definition video streaming); reducing latency for services such as gaming and video telephony, due to statistical mutiplexing across channels and hybrid frequency re-use which reduces the interference from the adjacent sectors and improves the rates that can be offered especially to the users at the edge of the cell. Where EVDO isn't available, 2G/1xRTT data capability will be present and your EVDO modem or phone will automatically connect to it. While considerably slower than EVDO, 1x is a huge boon - if you find yourself in a remote location with no EVDO connectivity, you will still be able to remain connected! Commonly Used Abbreviations MIN - Mobile Identification Number ESN - Electronic Serial Number PRL - Preferred Roaming List SID - System Identification Number SCM - Station Class Mark CAI - Common Air Interface A Key - Authentication Key NAM - Numeric Assignment Module SPC - Service Programming Code Glossary BREW - is Qualcomm's open source application development platform for wireless devices equipped for CDMA technology. RUIM or R-UIM - is a transferable identification card for mobile phones that belong to the CDMA network. RUIM cards store personal information, including the name and account number, the cell phone number, as well as the contacts' names and numbers. The RUIM cards also store text messages and any other important phone settings. MEID - An ID number that is unique for each new CDMA mobile in the world. It identifies the phone to the network. MEID is a replacement for ESN. It began replacing ESN in 2005 since the pool of ESN numbers has been virtually exhausted due to the number of devices in use. It is equivalent to IMEI in GSM phones. ESN - An ESN is a numeric identifier that uniquely identifies a CDMA phone. The ESN is what a CDMA network uses to identify a phone and determine which subscriber's account, if any, it is linked to. Because of this, when switching from one phone to another, subscribers will have to provide the ESN of the new phone to the network carrier before it can be activated. The ESN is being phased out in favour of the MEID. This is happening because phone manufacturers are literally running out of ESN identifiers. OTA (Over-The-Air) - Any kind of event or transfer that takes place wirelessly using the cellular network as opposed to using a cable or other local connection. PRL - is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process. In the case of RUIM-based CDMA devices, the PRL resides on the RUIM. The PRL indicates which bands, sub bands and service provider identifiers will be scanned and in what priority order. Without a PRL, the device may not be able to roam, i.e. obtain service outside of the home area. Frequently Asked Questions : 1.How can I locate the ESN or MEID number on my phone? All mobile devices are identified by an Electronic Serial Number (ESN) or a Mobile Equipment Indentifier (MEID). Some devices may display the ESN or MEID under the battery, below the battery or on the back of the phone. Behind the Battery: Below the Battery: Back of the Phone: Below are examples of labels that can be found on devices supporting ESN numbers. As ESN Is an 11-digit Electronic Serial Number. An ESN in hexadecimal, or HEX, is represented by 8 characters that are numbers and letters. Below are examples of labels that can be found on devices that support MEID numbers. MEID is always hexadecimal, represented by 14 characters that are numbers and letters. The first digit is always A - F. NOTE: Don't confuse the letter O with the number 0 (zero). It is always a zero. Only letters A-F are in an ESN/MEID. Sourced info from the net and all recognition to them. Found this good report on the technical side of CDMA which you may find interesting. Some of the details provided may be obsolete as it was written a while ago, please verify the same. cdma.pdf Edit - Frequently Asked Questions

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Two entrepreneurs in Bangalore try living on $2 a day Source: ndtv.com Three weeks ago, two city-bred, upper-class aspiring entrepreneurs from Bangalore embarked on a mission: learn more about India, by subsisting for a month on what the average Indian does - just 100 rupees ($2.04) a day. So far, Tushar Vashisht and Mathew Cherian, both 26, have lost nine pounds and four pounds, respectively, and complained of dizziness and depression from a lack of food. Milk is a treat, traveling more than five kilometers (3.1 miles) a day can blow their budget and saving money is incredibly difficult. They say they miss dental floss, deodorant and toilet paper. "This has been a humbling experience," said Mr. Vashisht, a former investment banker with Deutsche Bank in San Francisco and Singapore, who says his banker lifestyle now seems "unreal." He said he plans to live on the average Indian's income one day a week for the rest of his life. Mr. Vashisht and Mr. Cherian, a computer science graduate from Massachusetts Institute of Technology, have been tracking their "lifestyle experiment" on a Facebook page and a blog that breaks down their spending into pie-charts and graphs, and tracks their grocery shopping and caloric intake. The two met when they were both working at the Unique Identification Authority of India, a government project that aims to assign a number to each Indian citizen, in part to make sure that subsidies reach the poor. Recently, they both quit their jobs there to start a company together, selling education and health care content to India's more than 600 million mobile phone users. The 100 rupees-a-day project is a way to help them better understand average Indians' choices, they said. To arrive at the 100 rupees-a-day figure, they took India's average per capita income, which works out to 4,500 rupees a month, and subtracted one-third of their budget for rent. Normally, they rent an apartment together in the Bangalore suburb of Bellandur, so they decided to move into a 10- by-6-foot room used by their landlord's household help, to replicate what they might be able to afford to rent on their combined budget of 3,000 rupees a month. That left them each 3,000 rupees a month, or 100 a day to spend on everything else, from food to Internet use to utilities. From their old lifestyle, they kept the clothes they were wearing, their laptop computers and a badminton set. Their insights into the life of the average India, so far: *A manual laborer in India's lower middle class requires 3,000 calories a day, but invariably receives less. If he wants to add calories, he has to load up on carbohydrates because "protein is ridiculously expensive," they observed. *Addiction can cost dearly. "You smoke, you drink, you lose," said Mr. Cherian. A beedi (hand-rolled cigarette) or gutka (mix of betel nut and tobacco available in sachets) or alcohol addiction can add 30 to 50 rupees in daily costs and decimate the food budget, they say. *Mr. Vashisht and Mr. Cherian could not afford to hire household help, which is a staple of every upper-middle-class Indian household. They found that cooking and cleaning, including hand-washing their clothing, could take them each three hours a day. *Life, including work, home, school and shopping, must be conducted within a five-kilometer radius to be economical, and even then the bicycle is the only really affordable means of transport. Any kind of economic shock, such as medical expenses, can be devastating. After three weeks, the two managed to save 350 rupees. For their final week, they plan to subsist on 32 rupees a day, the spending limit India's Planning Commission set in a controversial affidavit filed with the Supreme Court to define the poor. Urban dwellers who spend at least 32 rupees (less than a dollar) a day on food, education and health care would not be counted as poor, the affidavit said, and would therefore be ineligible for government subsidies. Using that poverty line, 37 percent of India's 1.2 billion are poor, but many say that line is unrealistically low. For their last week, the two men will be living in the suburbs of Kottayam, a city in Kerala state, after investing their savings in two 140-rupee train tickets. They plan to cook over a wood fire, wash their clothes outdoors and drink well water. After deducting the Planning Commission's estimated spending on rent, utilities and transport, they will have 17 rupees a day for food, about one-third what they have been spending over the past three weeks. The "budget that planners have envisioned is not - even by a long shot - enough to have a filling, balanced diet," said Mr. Cherian. "Widespread undernourishment will have serious consequences to the future of India," he predicted.

Ice Cream Sandwich Features That Google Missed To Mention At Launch Event Source When Google announced Ice Cream Sandwich, it failed to mention several features of this Android release that many of you will surely like a lot. Android Engineer Dan Morill highlighted some of these features on Google+, other were identified from the SDK. Updated Settings: Settings menu has been revamped and it is now easier than ever to find the setting that you are looking for. Disabling Apps: If you can’t uninstall an app, you can always disable it in ICS. Android 4.0 adds the ability to disable an app and it will never run and its launcher icon is gone until you re-enable it. Improved Download Manager Support for Encryption in Phones: Full device encryption that was a part of Honeycomb is now available in phones. Audio Effects: New effects API. Support for WebM streaming, MKVs: Android 4.0 natively supports the playback of MKV files as well as streaming of Googe’s WebM video format. Hardware Acceleration: Android will finally have Hardware acceleration in ICS. It will allow for a super smooth user experience, better graphic performance, and better responsiveness within apps. Indic fonts (Devanagari, Bengali and Tamil) support in WebView and stock browser. No need to download other browsers just to view Hindi webpages.

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Control over network data Mobile devices make extensive use of network data for streaming content, synchronizing data, downloading apps, and more. To meet the needs of users with tiered or metered data plans, Android 4.0 adds new controls for managing network data usage. In the Settings app, colorful charts show the total data usage on each network type (mobile or Wi-Fi), as well as amount of data used by each running application. Based on their data plans, users can optionally set warning levels or hard limits on data usage or disable mobile data altogether. Users can also manage the background data used by individual applications as needed. Data usage controls let you monitor total usage by network type and application and then set limits if needed.

HTC Announces Sensation XL with 4.7 inch Display, 1.5 Ghz processor Source Rumored as HTC Runnymede and then leaked to sport a new name HTC Bass, it was finally made official today by HTC as Sensation XL. Yes, it is another smartphone to join the Sensation name-tag after the original HTC Sensation and Sensation XE. Revealed today at a London event, HTC Sensation XL is the second HTC device to come with Beats Audio integration and will be available across EMEA and Asia Pacific regions from early next month. HTC Sensation XL features 4.7 inch display, 1.5GHz Qualcomm dual core processor and 8MP rear camera. You can check out full list of specifications below. HTC Sensation XL Features:

Latest Update 4-Oct-2011 After Discussion with them in Latest ConCall they will be replacing the Alcatel AAA Auth Hardware with Globtel Hardware to Support Unified Data plan and Hardware based PPP, Unified Plan will come in December end.

Thank you all my dear friends, for your appreciations. A big thanks to Rajan Brother for starting this thread and to encouraging other members on the forum. Aap sab friends ki he duva hai jo aaj mai iss mukaam per pahuch paya. It was not possible without all your support and motivation my dear friends. And a big round of applouse for all other members also who participate wholeheartedly on the forum. Toh Bhai Log.....apke iss DADDU JI ki taraf se aap sabko tahe dil se dhanyavaad +1 to all of you my dear friends.