标签: mobile phone

I recently wrote about the cubicle , an invention that resulted  to the steep decline in the productivity of legions of developers as it encourages a never-ending stream of interruptions.   But there's another invention whose impact is even worse: the telephone. Now aided by email, Twitter, texting and a myriad of other technologies, the telephone and its ilk ensures that we never get a few minutes of peace in which to carefully think through a problem.   It's astonishing how rapidly the telephone has changed life. My grandmother grew up in Manhattan. When she was young she knew someone, across town, who had a phone.   When I was a kid it was illegal to own a phone in this country. Ma Bell leased them to consumers, and most homes had just one, black, rotary dial telephone. An out-of-state call (always for dad) brought the family to a standstill. "It's long distance" were the words that hushed all, and made us wonder what was of so much import it deserved such an expensive and rare call.   At the 1965 World's Fair in New York an exhibit touted the new push-button phone, and offered a chance to compare dialing speeds. My brother was so puzzled by this novelty that he was unable to "dial" a number in the maximum time allotted.   But now every desk has one. We all have at least one mobile phone at hand at all times, to the extent that cars are now telephone booths on wheels. ( Remember telephone booths? ). Here in Maryland the driver's use of a hand-held phone was outlawed a few weeks ago.   The mobile is no longer a phone; it's an appliance that feeds a great number of streams of chatter to us. Each beep, tweet, text and call is an interruption, one that breaks a train of thought (assuming one has the time to form such a train). Each is demanding of our attention. I constantly see people walking with their gaze entirely on the little screen, inevitably bumping into still objects or other pedestrians.   The modern telephone, especially mobile phone, is a marvelous device of great complexity that offers an amazing array of capabilities. But it's a tool. We have a responsibility to manage it, like any tool, for both safety and to maximize our productivity.   I'm reminded of a story: An old farmer and a young farmer are talking about farm-lore, and the old farmer's phone starts to ring. The old guy just keeps talking about herbicides and hybrids, until the youngster interrupts "Aren't you going to answ er that?"   "What fer?" Says the old-timer. "Why, 'cause it's ringing. Ain't you gonna get it?" asks the younger.   The older farmer sighs and knowingly shakes his head. "Nope". he says. Then he looks the younger in the eye to make sure he understands, "Ya see, I bought that phone for MY convenience."   Most of us regard the ringing phone as an emergency. Drop whatever you're doing and grab it! Stop all conversation, abandon the meeting, and respond to what is all too often some salesman pushing cheap phone services.   Manage it responsibly.

Three mobile phone Gather circles in Shenzhen Author: Steven Jiang ( Shenzhen Kenah Technology Co., Ltd. )   Time: 2008-7    Transshipment Forbidden     There are three mobile phone Industry clusters in China; meanwhile there are three mobile phone Gather circles in Shenzhen too.   Shenzhen is the most of important mobile phone production base in Global. Here has the complete mobile phone Industry Chain. Mobile phone parts, mobile phone design, mobile phone factory (assembling line), mobile phone cargo agent, all of these gather in the small area, Shenzhen Special Economic Zone, about 2000 km k ㎡ .   All of the mobile phone parts or accessories suppliers or factory can be found out in Shenzhen in about 400 SQ.KM. The development of this industry brings down the mobile phone cost that let the lowlife have the ability to purchase it.   The Shennan Road is a line to string out three mobile phone Gather circles, from west to east, orderly, Nanshan Hi-tech Park, Chegongmiao (Tian Cyber Park), Huaqiangbei.     In Nanshan Hi-tech Park, most of the companies are Design House, such as Longcheer, Ginwave ,......                          In Chegongmiao, there are many mobile phone manufacturers (integrated the parts to complete mobile phone) and Design Houses.   In Huaqiangbei, most of the companies are the manufacturers and the sales department of manufacturer......        

The process of mobile phone design and manufacture --ii Author: Steven Jiang     ( Shenzhen Kenah Technology Co., Ltd. )   Time: 2009-5-17     Transshipment Forbidden     5, PM (Project Management) Project Management The big mobile phone company has perfect and clear division of labor in great detail, such as TPM (Technology Of Project Management), that is the specialized control technology PM, while the ordinary PM, only control the progress of project and coordinate the relations between the departments. Usually, the PM department exist in the big company which has themselves design, production and sales.     6, Sourcing Resources Development Resource development of staff to have to keep digging new resources, such as new materials, new cell phone components, testing equipment. They must ensure that the production line has all of the production materials, when the phone started trial production.   There is a LRIP(Low Rate Initial Production) before to volume production. It is not only to inspect the hardware / software maturity, but also to inspect the manufacturing technique and production test technology. There are certain models can not pass the last procedure. So the “new” mobile phone will not appear on the market. It is a great loss, because all of the investment of financial and human can not get the payback or return.   7, QA (Quality Assurance) Quality Supervision QA departments are responsible for quality assurance in the whole process, supervise if the development process to meet the scheduled process, to ensure that the project can be produced.   There are many new projects to be abandoned because the process has no considering the mass production. 　　 The production of a cell phone is not in the laboratory experiments as simple as. It is not an easy thing to ensure the quality of every product when to mass produce. It is completely different things to produce one cell phone sample and to mass produce the 100,000 mobile phones in production line.   For example: all of the food which comes from Chinese restaurant is just samples, and McDonald's is products, so McDonald could have done a lot. But so far, the Chinese restaurant has not yet been achieved as the size of McDonald's, the essential reason is that Mc Donald has a set of rule to stipulate how to make a product, and Chinese restaurant cook just depend on the experience or the feeling to produce a food.   Therefore, all of mobile phone design houses establish a process to prevent the emergence of the design defects. 

The process of mobile phone design and manufacture --I Author: Steven Jiang ( Shenzhen Kenah Technology Co., Ltd. )   Time: 2009-5-17    Transshipment Forbidden   Today, I try to introduce the mobile phone design process and department relation in the design house. And then talk about the test before the mobile phone on the market.   First, mobile phone design process Generally speaking, the design house has six departments, the six departments as follow: ID 、 MD 、 HW 、 SW 、 PM 、 Sourcing 、 QA 。   1, ID (Industry Design) Industrial Design Including the appearance of mobile phones, material quality, hand-feeling, color match, the realization of the main interface and the design of color and so on.   For example, Motorola "Ming" translucent clamshell, the Nokia 7610's circular-shaped appearance, Sony Ericsson W550’s orange color, Nokia 5800’s touch function and the Motorola R1 revolving-slide function. The user’s experience and special feelings belong to the mobile phone industrial design. The industrial design of mobile phone is particularly important, because the success or best-selling of mobile phone depends on the Industry Design.   2, MD (Mechanical Design) structural design MD refers to the housing (face A and back B), the camera position and the fixed way, the connecting between the battery and the mainboard, the thickness of mobile phone, If it is a slide phone, how to slide up and how to achieve auto-up shells, and the arrangement of how to plug in and take off the SIM card. All of these are the areas of Mechanical design of mobile phones. It is necessary to know the Material and the craft to the mobile phone designer.   The thickness (just 13.90mm) of the Motorola V3 leads the fashionable trend. The sales point is the Ultra-thin. The housing of V3 uses the advanced aero metal. It can be said that the success of the V3 depend on the choice of the special shell material.   Speaking the important of the MD, someone said he can fell the housing shaking when the Ultra-thin slide phone calling or answering. The bug come from the MD design, because the housing is very thin, the housing and speaker make out the resonance. 　　 And the Motorola R1 and Nokia 5800 are the represents of the successful combination character ID and special MD.   3. Hardware designs include the circuit design and antenna design. And it is important that HW and MD should keep communication.   MD required the phone has a thin shell, so the first thing is that design a thin circuit. Meanwhile HW required the MD leave a big black space for the antenna, and there is an enough distance between the antenna and the battery. In addition, HW required the ID do not place the metal parts close the antenna and so on. It is obvious that the cost of a mobile phone which has an internal antenna is higher than the external antenna mobile phone. The main factors is the antenna design, the material required, design of the circuit and the cost of the production, all of the terms lead to the higher cost than the external antenna mobile phone.   Usually, the MD design engineer and the ID design engineer have an argument. MD said ID is just a painter, to paint something which can’t make out. And ID said MD is clumsy, the MD can’t understand the thought of ID department, can’t design out the suitable MD to coordinate with the ID design. So the mobile phone is not popular and has no the good sales.   On this account, it is necessary that all of the department will gather together to analyze and judge the feasibility of the ID department thought. A good ID plan has a creative, has feasibility on MD, and the most important is that the consumer accept the ID, Nokia 8800 and Motorola V3 are the samples. 　　 In additional, sometimes, there is an argument between the HW and ID, for example, ID like the metal Ornamental on the housing.   But the metal parts will affect the antenna design and lead to the static problem to endanger the security of the main-board. The metal parts lead to the more difficult to avoid the signal shield and the static problem. So it needs to develop the new material to meet the ID requirements. The Nokia 8800 is a good example, a sense of the metals, without affecting the antenna’s reception.   4. SW (Software) Software Design Relatively speaking, SW is more easily understand by everyone, due to the popularity of the computer, so that we can maximize the various kinds of software. For example cell phone user interface model---the mobile phone nine operating menu. This scope belong the SW design.   SW work is to design the interface, and test the operability of the interface. SW test is very complex, and there are numerous items. SW test is not just in the search for Bug, consistency tests and compatibility tests are very important items. in the current "content-based" information age, software is the final behind-the-scenes mainstay for a mobile phone. The driver of hardware was performed by the software. So there are many conflicts between the SW and HW not less than the other departments. On this account, they need a PM (Project Management) to coordinate and management. Next we talk about he PM.

The USD13.50 mobile phone and new trend in mobile phone industry Author: Steven Jiang ( Shenzhen Kenah Technology Co., Ltd. )   Time: 2009-12-17    Transshipment Forbidden   Yesterday, a mobile phone manufacturer called me to introduce their new models---low-end mobile phone, the price is just USD14.00. I took the mobile phone part by screwdriver to see the main board. The mobile phone adopt the Infineon ULC OS, has a high integration level, just a few components and chipsets.   It is the first choice to adopt the Infineon ULC for to make the super low-end mobile phone.   Spreadtrum has favorable position in Low end mobile; and MTK 6225/6235 chipset is very popular in the Mid-Range Market. Generally speaking, the 3 platforms share about 90% Chinese mobile phone market. in addition, we can find the Coolsand platform in the low-end mobile   phone products occasionally, especially the COPY-NOKIA 1 series.   More and more Chinese manufactures will adopt the other platforms except the MTK. I think is a trend. Because most of the MTK platform adopters face the keen competition in the Mid-Range market, and the mobile phone manufacturers just has little profits. Infineon, Spreadtrum will get more market share. Meanwhile, iphone, Google and Dell will take a variety of development in the high-end mobile phone market.   We can analyze the profit margin to get a clear idea. Let us to do a rough calculation, for example, The TV mobile phone, and the low-end mobile phone, TV mobile phone              Price: USD39.00-USD49.0// median: USD 44.00    Profits: USD3.00 Super low end mobile phone    Price: USD13.00-USD15.00//median: USD14.00     Profits: USD1.50 Profit margin: TV mobile phone USD2.5/USD44.00 = 6.8%; Super low end mobile phone USD1.50/USD14.00 =10.70% So, the latter is higher about 4 percent than the former.   In a way, we can get the same result from what happens next in mobile phone market. It is obvious there are two demand in the next, one is that existing mobile phone users in the Mid –end market will change a new mobile phone, most of them will select the smart phone, such as iphone, google phone, and the new comer Dell phone.   The other is that the telecom operators select the super low end mobile phones as a point of breakthrough to enlarge the mobile phone owning rate and the percentage of coverage in Developing countries (in China, India, Brazil, and most of the Afric countries).   By the way, I want to say that the Chinese mobile phone made a great contribution to the world’s economy, especially the Developing countries’ economy.