The mobile phone can undoubtedly be regarded as the fastest growing product in the past two years, and with the collective progress of the screen, memory, camera, ring tones, etc., the overall level of the mobile phone has been raised to new times again and again. the height of. However, the advancement of technology is not necessarily known to everyone. Even the small editors who work as practitioners often have the feeling of “three days not seeing the same”, let alone those who are busy with their own work every day. Innocent consumers. It is precisely because of this, some black-hearted manufacturers can not help but start a trick, and began to deceive consumers through the technical point of view. This of course is our Zhongguancun online mobile channel can not see the past!
Screen parameters: 260,000 colors must be better than 65,536 colors?
Since the first 256-color color screen mobile phone was officially launched in China in 2001, we have experienced several dynasties such as 256, 4096, 65536 and 262144 color screens. Even a small number of products using 16777216 color screens exist in the market. Of course, we often see mobile phone manufacturers are happy to use this as a selling point to publicize. However, the screen of 260,000 colors must be better than 65,536 colors? Material color number is more important!
At present, the most common mobile phone screen materials are: TFT, TFD, STN, CSTN and UFB. With the birth of BenQ-Siemens S88 and Sharp V903SH in the parallel market, OLED and ASV are gradually becoming familiar. If the display effect is ranked from high to low, it is ASV, TFT, OLED, TFD, UFB, STN, CSTN. As the process matured, it also symbolized that high-end TFT screens have entered the mortal world, and most of the mid-end products use this material. In order to save costs, the mobile phone of about 1,000 yuan will be equipped with UFB, STN and so on. It can be said with certainty that the 260,000-color UFB display is inferior to the 65,536-color TFT, so users should never be superstitious.
The so-called resolution refers to the resolution of the picture, which consists of pixels. The higher the value, the finer the picture, the less graininess, and the more information that can be displayed. Most of the low-end mobile phones in the market currently use 128×128 and 128×160 resolutions, while the mainstream products are mainly 176×208 and 176×220, while the high-end is mainly occupied by QVGA (240×320). Some friends will complain that their mobile phones display blurred photos and subtleties are not clear, which are mainly caused by lower resolution. Just as our computer screen will have a new look after adjusting the resolution from 800×600 to 1024×768, we recommend that you try to choose a product with high resolution if economic conditions permit.
This is an important indicator that complements the screen color and resolution. It is usually based on the diagonal length in 吋 (inches). The larger the value, the larger the screen. In general, for screens of 2.0 inches or less, we don’t have to choose a product that is higher than 65,536 colors. Because research shows that the human eye is hard to feel the effect of color increase in this case. The screen above 2.0 inches, at least with a resolution of 176 × 208 (QVGA is better), so that the details of the image can be fully expressed, and then the effect of 260,000 or even 16 million colors, which is the best Combination method.
Memory capacity: How many word games can be returned?
No matter whether a mobile phone can support third-party memory cards, the memory capacity of the machine itself is a topic of concern to everyone. The bigger the natural, the higher the appeal. However, the real machine is often inconsistent with advertising. Faced with all kinds of “following words” from manufacturers, do you really have the ability to recognize?
Usually the unit we use to measure the phone’s memory space is MB, which is Mbyte. But now some mobile phone manufacturers are starting to introduce their products with Mbit. Why? Actually it is very simple, because 8bit=1Byte, so 8Mbit=1Mbyte. If a memory has only 5MB of products and you use Mbit as a unit, you can write it as 40Mbit. An unsuspecting consumer will naturally choose a product of a higher order of magnitude?
When the mobile phone is shipped from the factory, part of the content is solidified in the memory, and the user can call it and cannot delete it. Some vendors label the space occupied by the system with the sum of the memory actually opened up to the user in the advertising slogan, which is naturally much more than the products that only indicate the actual free memory. It is also worth noting that the memory of some products is not what the user wants to save. The manufacturer has fixed the space for pictures, videos, ring tones, etc. before leaving the factory, but it is not dynamically allocated, and it seems to shrink.
Photo effect: 4 million is not as good as 2 million?
The camera pixel, this is a topic that is increasingly valued by everyone after the mobile phone entered the megapixel level in 2004. However, what is the image quality of a camera phone, is it really only determined by the pixel level? Can you distinguish between “effective pixels” and “highest pixels”?
A high school classmate of Xiaobian recently purchased a LINUX smartphone with a 4 million-pixel camera that was just launched by a famous domestic mobile phone brand. However, after buying it, he found that the image quality is very general. At first I thought it was dust on the lens, but after a few wiping effects, it still didn’t improve. Later, I found out in the network that I found out that this is an effective pixel of only 1.3 million, but it is written by software and interpolated to achieve 4 million products, so its photo effect is actually less than 2 million pixels.
“Effective Pixels”, the English name for Effective Pixels, refers to the pixel values that are actually involved in photographic imaging. The value of “highest pixel” (both nominally 4 million as previously mentioned) is the true pixel of the photoreceptor, which typically contains the non-imaged portion of the photosensor. When users buy a camera phone, they usually see that the merchant advertises “maximum pixels reach ***”, but avoids talking about the effective pixels. At this point, we must figure out what the effective pixels are, because this value is the key to determining the quality of the picture. Who should I choose for “AF” and “Face Focus”?
Although the megapixel camera is now the standard for many camera phones, it has become the mainstream of the market, but we must not simply regard their photo effects as the same horizontal line. With the decline of the Sony Ericsson K750c (data article price review), the “autofocus” phone is no longer a symbol of high-end. Our previous evaluations can prove that in the case of the same pixel, regardless of color performance, landscape level or macro, night scene shooting, etc., “autofocus” is much better than the ordinary “pan-focus” effect.
“AF” (AF, the abbreviation of English Auto Focus), also known as “Auto Focus”, is an electronic and mechanical device that automatically sets the focus on the subject and makes the image clear. Features. The most important feature of autofocus is high focusing accuracy and easy operation. Especially for focusing on the subject, autofocus has advantages, and it also helps the photographer to concentrate more on the captured picture. At present, mobile phones mostly use passive autofocus, which mainly performs autofocus by electronic visual or phase difference detection by receiving light from the subject.
Ringtone system: The higher the number of chords, the better the effect?
“Chord” is also called polyphony, polyphony, which refers to the sum of the pronunciations of each channel in MIDI. The polyphonic ringtones are richer than the previous monophonic sounds, and have a strong three-dimensional sense. Therefore, when the mobile phone used this technology, it immediately became popular. From 16 (previously there have been 4, 8, etc.) to the current top 128, the chord technology has grown very fast in the past two years. However, in the face of the rapid blush of real people singing MP3, AAC and WAV, the “chords” that can’t simulate vocals began to look faltering. Xiaobian here to advise consumers is that if you prefer to use MP3 ringtones, then you don’t have to care about the number of chords when you buy, because it has nothing to do with the MP3 ringtone effect, we have nothing to do with it. More attention should be paid to the quality of its speakers.
Standby time: Can you really not charge for a week?
We can often see 200 or even 300 hours in the standby time parameter of a certain model of a certain brand, but when we buy it, it is often found in the actual use process, the standby time of three days or even two days. Can’t reach it. So, is the manufacturer cheating us?
Under normal circumstances, after the manufacturer fully charges the mobile phone, the time that the battery can maintain between the consumption of the battery and the low battery warning is called “standby time” without being in a call, without shutting down, and without any operation. “, so we usually call it “theoretical standby time.” In actual life, the mobile phone not only has to shoulder calls, send and receive text messages, GPRS Internet access, play MP3 music, run JAVA games, etc. The battery also supplies power to the screen, keyboard lights, speakers and other modules, naturally it is impossible to reach the manufacturer test. The “ideal state”. Especially when the user is in a region where the network signal is not very good, the mobile phone will automatically increase the transmission power search signal to further accelerate the battery power consumption.
Smartphone: How much more do you not know?
Look at a smartphone from the perspective of measuring a computer. However, when describing a product, the manufacturer often does not explain all the hardware information such as the central processing unit and the running memory space. This is especially true in the smartphone of the Symbian operating system Series60 platform. obvious. For similar events, we don’t have a particularly good solution. Only you often pay attention to our item evaluation and horizontal review articles. We will use professional evaluation tools to show them all in front of you. And bring the most objective evaluation and purchase suggestions.related articles http://ts80hou.com/en/buy china mobile.html