Introduction As per the final year students we had to learn statistical Quality Control subject for the first time. This subject includes statistical quality control theory part and its applications. The purpose of this subject is to present the technical tools that are needed to achieve quality improvement in an organization. It is essential that products need the requirements of those who use them. It provide the principle means by which a product is sampled, tested and evaluated and the information in those data is use to control and improve the manufacturing process So According to the Assignment we selected the cellular phone industry to analyzed the three products. Farther we moved to brand name Nokia, Sony Ericsson and Samsung. They are the leading cellular manufactures in this industry. Not like as pass, now cellular phones are evaluated with high technology and advance features. Therefore it is became a need of every human being. As well as it’s is become a crucial item of every person. It became with keypad in the pass and now it available with touch system. It’s very difficult to emerging the future versions of cellular phone. Because the technologies developing day by day. Quality improvement methods of NOKIA Nokia is the most popular brand in the mobile phone industry. This Finnish icon is the world’s largest manufacturer of mobile devices and has around 40% of the global device market. Nokia was established in . Nokia has always used innovation as a key of success. Billion customers and relationships with hundreds of operators around the world, Nokia may well manage to hold its place. Not only they consider profit but also focus on quality of the product, in follow shows that their quality considerations. It is important to define tools that can be used to control the quality of the application during development. Quality control is a continuous process that extends throughout the development process, and it should be possible to backtrack later to identify the origin of mistakes that might have been made during the project. Quality control tools include, for example, technical reviews and review minutes, checklists, expert evaluations, and user feedback. The tools should be linked to specific phases and outputs of the development process. To evaluate quality, define specific and exact requirements for application that can be used as quality metrics. The metrics can require the following: Reduction in the number and severity of errors, and improvements in the findings of reviews and testing; Improving the rate of success at meeting project deadlines and milestones; Conforming to the requirement specification; Responsiveness to feedback from external experts, including the evaluations of usability experts. In addition to testing and evaluating the product that is under development, must regularly evaluate the application development process itself. Audit the existing process and gather feedback from the development team to determine whether there is any need for change. Following tests are done to clarify quality of the products. Components / Subassembly Test Testing the quality of the transducers, microphones or subassemblies is important to reduce the failure rate at the final test. Sorting out defective modules at this early stage is much more efficient than rejecting the costly completed phones at the end of the production line. Assembled PCB Test It is recommended to test the mobile phone PCB (printed circuit board) after its production or before inserting it into the mobile phone housing. Missing or defective components, passive components with wrong value and PCB errors can be detected in this manner. Final Acoustic Testing The FX100 Audio Analyzer is ideally suited for the acoustic testing of transducers and microphones of mobile phones. The optional Rub and Buzz detection ensures a 100% correlation to the human ear, so making tests by human operators obsolete. It is the first solution that enables the manufacturers to conduct a reliable automated quality test. The system includes phantom power supply for the measuring microphone. The typical test cycle time is < 1 second incl. a patented noise cancellation algorithm that immunizes the measurement process against factory noise. Nokia is followed some concepts to upgrade their image. In below describe some concepts. Power saving concept In Nokia phone has a power saving telecommunication equipment called as Base Transceiver Stations (BTSs).Power saving is the major aspiration is that customers considered because everyone try to save energy. Energy saving mean money saving. Building environmentally friendly networks starts with energy efficiency in all the layers of the solutions. Nokia Environmental Policy Nokia company following eco-friendly system like reducing wastage and remove disposable things environmental friendly, using environmental manufacturing practices. Eg:- Nokia use disposable things to manufacture phone parts such as phone frame, transistors etc. This system called as recycling. Quality Improvement Methods of SONY ERICSSON Sony Ericsson Company is a largest mobile phone manufacturer in the world. It is a Sweden company. They produce various kinds of mobile phones. Every time they doing rapid innovations and producing phones with new options to differentiate their products from competitors. It establish in 1876 by Las Magnus Ericsson. Sony Ericsson Company uses various technologies to improve their products quality. Green Heart Concept User Friendliness Produce phones to fulfill customers various needs. Acquiring Quality standards Use higher technology for manufacturing task. Attending various ages of peoples to ensure their products quality. Green Heart Concept In the Green Heart concept Sony Ericsson company try every time to produce their products environmental friendly. This is one of strategy they use to improve the quality of products and acquire the market. Because in the current situation according to the busy life style human needs are rapidly change as a result of this situation the mobile phone evolving in to a mobile computing device passes advanced PC- Like functionality. The demand for these smart phones with processors is increase highly. Because people can do more work by using these smart phones. Because these smart phones has more advance features than normal mobile phones. Those are voice SMS, High quality audio and video, Advance 3D games, Faster internet Browsing, Email, High quality camera, productivity applications, Bespoke applications And Global Positioning System (GPS). These phones require more energy and more Hardware resources than normal cell phones. That is badly affected to the environment. Because they have to use more resources to produce these phones as well as have to use more energy to these phones. As well as consumption trends are equally affected to the environment. The mobile phone is consumer electronic device with the highest replacement rate in the history. In Europe nearly 800 million mobile phone users replace their phones on average every 18 months. This activity badly affect to the environment. Because those mobiles are produce by using chemicals and not environmental friendly materials. Sony Ericsson company use concept namely Green Heart to reduce these kind of bad affections. They produce their phones by using recycled materials. As well as these phones can recycle after replacing them. That concept helps them to improve their products quality and to do the emotional effect to consumers to buy green products to protect the environmental balance. As a result of following this concept Sony Ericsson Company can win the 2nd place in the Green Peace Ranking. Green Peace released the 16th version of their Guide to Greener Electronics, where they rank the 18 top manufacturers of personal computers, mobile phones, TVs and games consoles according to their policies on toxic chemicals, recycling and climate change. Green Peace’s three goals with the ranking is to get companies to: Clean up their products by eliminating hazardous substances. Take back and recycle their products responsibly once they become obsolete. Reduce the climate impacts of their operations and products. As well as they produce mobile phone batteries and mobile phone chargers according to the energy server policy. That means their batteries and chargers are powerful and they use fewer energy. That is directly it helps to reduce energy consumption and save the environment. Now Sony Ericsson company include user manual in the mobile phone it is another result of the Green Heart concept. If they produce one million mobile phones they have to use 350 tons of papers to make user manuals. 13000 trees and 75000 cubic meter of water want to produce those papers. As the result of above activity we can save environment. User Friendliness Sony Ericsson phones produce more user friendly because by using them we can fulfill our wants quickly. As well as if the person who use Sony Ericsson phone in the first time he can achieve his wants quickly and easily. As a Example if we have to create our mobile’s internet settings in Sony Ericsson phone we can go to the internet settings and select one of them or edit them. But in Nokia phone we have to go two places one place for select settings and other place to edit settings. That is not easy to the person who use the Nokia phone in the first time. Produce phones to fulfill customers various needs. Sony Ericsson Company produces various types of phones to match the various needs of customers. They produce walkman phones ( W series) for the users who like to listen songs every time with high audio performance. Cyber shot camera phones ( C series ) and camera phones ( k series) for the users who likes to use high quality camera. PDA or Smart phones ( P series ) for the users who likes to use advance mobile phones with higher performances. Acquiring Quality standards As well as Sony Ericsson company acquire quality standards IS0 9001 (Quality Management System) ISO 14001 (Environmental Management Standard) OHSAS 18001 (Occupational Health & Safety Management System) Use higher technology for manufacturing task Mobile phone manufacturing process is very complicated process. In this process Sony Ericsson company use computerized machines in higher technologies. Because defective rate of computerized system is very low. By using this kind of system they can eliminate waste and improve their products quality. Attending various ages of peoples to ensure their products quality Sony Ericsson Company has product testing institute to check their products quality. In this institute they use customers’ ideas to ensure the quality of their products. They attending small children, seniors, Guido’s, Models, Glam rockers to compare their products quality with same phones in various brands. Quality Improvement Methods of SAMSUNG Samsung Electronics was founded in 1969 in Daegu, South Korea as Samsung Electric Industries, originally manufacturing electronic appliances such as TVs, calculators, refrigerators, air conditioners and washers Samsung Electronics sold 235 million mobile handsets in the year 2009. At the end of 3rd Quarter 2010 Samsung had surpassed the 70 million unit mark in shipped phones, giving it a global market share of 22% trailing Nokia by 12% Overall, Samsung sold 280 million mobile phones in 2010, corresponding to a market share of 20.2. Production Process of Samsung mobile Industrial Design Conceptual design Creating the initial requirement document Interaction design and prototyping Visual and information design implementation Samsung’s quality policy Its quality policy is best on an effective quality system which is used for produce best products and services that exceed their customers’ requirements and expectations. All executives and employees of SAMSUNG are making continuous efforts to achieve the very best quality in all products and services which it offer for customer Samsung obtained ISO/TS16949, the international standard for automotive industry, in 2004. And it also achieved TL9000, the international standard for Telecommunication industry, in Oct. 2001. In addition, Samsung is continuously upgrading the quality management system in all stages ranging from order receipt, development, production to shipment. Some Achievements Samsung Telecommunication ISO 9002 Certification Double Productivity Award received from SEC Korea. Excellence in Consumer Electronics Award Rajiv Gandhi Excellence Award Samsung Quality Award – Gold Level National Quality Circle Award Environment Policy Recycling Recycling is the first step toward environmental protection. That is why Samsung Electronics has actively participated in a recycling program for end-of-life electronic appliances. Through the program, Samsung is leading the efforts to create a recycling-based society where discarded products are reused as resources for manufacturing, and at the same time it is making great contributions to preserving the environment and using resources efficiently. When developing mobile phones, Samsung takes account of not only the performance, price, quality, and design, but also environmental issues that can arise in the manufacturing process Eco- Declaration Samsung produces mobile phones that carry Product Eco-Declaration (PED), a description of environmental features of all phones such as weight, energy consumption, and reusability. Samsung is continuously expanding the application of the system into more of its mobile phones. Electromagnetic waves Specific Absorption Rate (SAR) is a measure of the rate at which radio frequency energy is absorbed by the body when using a mobile phone. The national and international standards impose upper limits on SAR. All of Samsung mobile phones are designed to meet the standards. Samsung Unveils Environment-Friendly Mobile Phones Samsung follow the environmental friendly methods in their production process. Also Samsung introduced series of environment friendly phones such as W510, F268. When producing W510, Samsung did not use any heavy metals, such as Lead, Mercury, and Cadmium. Charger of those phones also made accordance with environment protection.