Tablet Buying Guide

1. Text part
Many products have graphics and text including product LOGO printed on the back of the fuselage. This kind of text is usually printed on it using special technology, so it is not integrated with the back plate. After using the product, the surface of these pictures and graphics will show varying degrees of wear and tear. The most typical one is that the color becomes darker, or the color is different from other products of the same type. Because during the renovation process, it is troublesome to replace abrasive tools, so many unscrupulous businesses have adopted the polishing method. As a result, many of the polished LOGO surfaces will have a relatively abnormal luster, which looks very uncoordinated.
2. Interface part
For the interface part, we usually focus on the USB interface and headphone interface that are widely used. The TF expansion interface and HDMI interface do not require too much attention because they are less frequently used. As users require more interface definitions, including fingerprint recognition, NFC, RFD and other functions.
First we have to look at the edges of the headphone and USB ports. These two interfaces are plugged in and out frequently, so the edges of the interfaces are prone to leaving traces of wear. Especially the USB interface, because the interface has sharp edges and corners, refurbished products will have obvious signs of processing. Moreover, we can also observe the internal metal parts of these two interfaces with our eyes. Because on these refurbished products, these metal parts will weaken the anti-oxidation part of the surface due to wear, and slight discoloration is still easy to observe.
3. Shell screws
Early tablet computer products did not adopt a screw-free design in appearance design. Even today, due to cost considerations, many small brands still use this old-fashioned appearance grinding tool. For products of this design, we can judge whether the product is new or old by checking the condition of the screws. Because some anti-rust treatments are used on the surface of the screws. The anti-rust layer of used products will be damaged to some extent. Especially for some products with black shells, the screws are generally blackened. Even if they have not been disassembled, some traces will remain.
4. Shell edge
Except for some low-cost products, the shell grinding tools of many products adopt a screwless design. During the repair process of this kind of shell, you need to use tools to pry the seams. Therefore, the refurbished product may have some obvious marks. In addition, even if they have not been disassembled and repaired, many tablets are made of plastic. This kind of shell technology is not very mature, so used products will have some "warping" to a greater or lesser extent. This is due to the heating characteristics of the Android system. In addition, the author would like to remind everyone that although some scratches will appear on the warped edges of the product, it does not mean that the product is a refurbished product. Because products are produced in batches on an assembly line, some tools are used to place and fix the products during the batch placement process. Some scratches are caused during the placement and fixing process. Therefore, when we compare prying marks and scratches, we should pay attention to using two identical machines for comparison. If two or more machines have the same scratches, it means that the scratches on this machine come from production, and vice versa. Renovation.
5. Recessed screen
Nowadays, the screens of tablet computers are mostly divided into two types: recessed or full coverage. If it is a concave screen, then we must carefully observe the upper right corner of the product screen and the lower left corner of the product screen when choosing. Because these positions are the main corresponding positions of the touch buttons on the Android screen. If it is a used product, even if it is used very carefully and refurbished carefully, there will be more or less inconsistencies on the product. Other situations where edge positions are different.
6. Camera
Position with cell phones, digital cameras, etc. Tablet PC HD cameras are also prone to dust accumulation. The lens frame of the brand-new machine is very clean, without stains or scratches, and there is an obvious metallic luster on the surface. The lens frame of the refurbished machine has obvious signs of use, with a layer of gray-black stains on the four corners, and the shape of the lens hole on the back cover can also be seen.