Parallel imports are relatively genuine, such as refurbished, counterfeit or foreign machines. If it is a foreign licensed product, such as Hong Kong licensed product, it can generally be used, but you have to see if it is a simplified version. Some words in the traditional version cannot be displayed on the simplified mobile phone.

How to identify parallel mobile phones;

First of all, we should check whether there is a sign of "network access license of the Ministry of Information Industry"; Confirm whether the dealer's warranty is consistent with the manufacturer's warranty; Check the battery. Most of the batteries of parallel mobile phones are fake batteries. When buying a mobile phone, consumers can check whether the battery in their hands is a fake according to the above battery inspection method. Finally, check whether the electronic serial numbers are consistent. Every mobile phone has a unique electronic serial number. When the mobile phone products leave the factory, the electronic serial number will be input into the database, and when the warranty is needed, the data will be transferred to determine whether they are sold to the China market. If they find that the mobile phone is not from the China market, they will not be guaranteed. Therefore, once the parallel mobile phone fails, it is very difficult to maintain and complain. When purchasing a mobile phone, users can query the imei code of the mobile phone. The steps to query the imei code are as follows: Press the * # 06 # key on the mobile phone, and the general mobile phone will display 15 digits, which is the imei code of this mobile phone. Then open the cell phone battery cover. There is a sticker in the mobile phone with an imei code on it, which should be exactly the same as the imei code displayed on the mobile phone. Then check the sticker on the outer box of the mobile phone. There should also be an imei code on it, which should be exactly the same as the imei code displayed on the mobile phone. If these three codes are inconsistent, it means there is something wrong with this mobile phone. Let me add some more, hoping to enlighten you. I've had this problem before. How to identify parallel mobile phones is a dazzling technology product. At present, there are as many as sixty or seventy models and styles of mobile phone products. Some lawless elements fish in troubled waters and engage in the business of fake and shoddy mobile phones. According to the results of spot checks on the mobile phone market by the State Bureau of Quality and Technical Supervision, the qualified rate of mobile phone quality is only 66.7%. How do consumers identify counterfeit mobile phones and prevent quality risks? Fake mobile phones mainly have the following missing and fake network access signs. According to the national management regulations, mobile phones must be sampled by the designated regulatory authorities before they leave the factory, and can be sold only after passing the quality inspection and obtaining the network access license and Internet access marks. Internet access signs are usually posted on the back of the mobile phone (visible after removing the battery). At present, there are many unreliable mobile phones on the market without network access signs. There are two kinds of mobile phones without the sign of entering the network: one is parallel imports, that is, products smuggled into the customs by tax evasion; The other is that the factory can't reach the first-class product and is eliminated out of control and flows into the market. Forged network access license logo in some communication equipment sales counters, not only can you buy mobile phones that have not yet been listed, but also fake Internet access signs are clearly marked for public sale, which consumers cannot avoid. Product identification The products and packages of mobile phones produced in China should be marked with the product name, factory name, address, contact number, production date, complete instructions, attachment list, code number, network access certificate number, enterprise standard (trademark), model, specification identification and original laser anti-counterfeiting marks of some factories, as well as bar codes corresponding to the packaging opening on the body and packaging. Mobile phones produced overseas should have the origin of China, the name of the agent, the network access certificate number, the instruction manual, the list of accessories and the warranty documents. There are four main situations of fake and inferior mobile phones: one is that the old mobile phone has a new shell. Replace the old low-end mobile phone with a high-end new one. The second is a new unit and a new shell. Replace the new low-end machines and slow-moving machines with high-end hot-selling machines for sale. Third, the inferior machine has a new shell. The old machines and processors with unstable performance have been repaired many times, and many components have been replaced, and new shells have been put on the market. The fourth is to renovate the plate changer. It is understood that the original factory has legally modified it for its own product upgrade, and there are also non-original private modifications. Identify this revision machine, you can pay attention to check the model, body number, packaging, network access code and so on.

How to identify refurbished mobile phones:

1, shell The shell of the new machine is tightly attached, and the gap is smooth and smooth without burr. Refurbishers generally use imitation original shell, with uneven gaps and burrs. The upper and lower parts of the mobile phone shell are easy to be closed loosely, leaving a large gap. When recognizing, you can try to insert a small nail into the gap between the upper and lower covers of the mobile phone. If it can be plugged in, it is a refurbished machine. The surface of the shell is frosted like a new machine, and the mobile phone with small particles is absolutely not to be purchased. The paint on the machine shell was sprayed by JS. After a long time, the paint will fall off (the dust particles on the shell are caused by the operation without vacuum environment when painting);

2. The shell of the new machine has a faint sandalwood smell. If it is a refurbished machine, JS generally needs to beautify the fuselage. Although the appearance is smooth, it is not dry enough. When the cover is opened or the battery is taken out, it will smell of rubber, plastic or chemicals.

3. Keyboard and data cable interface. Due to the long-term plugging and unplugging of the charger plug and data cable, there will be black scratches on the charging interface of the refurbished machine that are difficult to eliminate. Keyboard refurbished machines mostly use the keyboard on the old machine or imitate the keyboard. The * * * of this keyboard is that it feels soft and has no toughness of the new keyboard;

4. Charging test. It is best to charge for a long time, generally 10 minutes or more. Because there are many refurbished machines that will run out of power after a long charging time. This is also a very effective method to judge the refurbished machine;

5.SIM card chip contact and battery contact. Generally, these two contacts JS cannot be replaced. If it is a refurbished machine, there will be obvious friction marks on the contacts of the SIM card chip, which looks shiny, which is caused by too much friction. If it is an unused chip of a new machine, the contact surface should be frosted;

6. Fix the screws. Mainly depends on whether there are obvious scratches at the interface between the screw and the blade, and whether there are pick marks on the two rubber pads below the inner screen.

7. Call quality. Bring your own SIM card to test the machine, call a friend, preferably a fixed phone, and ask the other party how the call quality is, whether the call sound is clear, whether there is noise, current sound and volume drop suddenly;

8. price. Because the spare parts of refurbished machines are mostly early products with poor quality, the price is also low. If you encounter a mobile phone that is ridiculously low in price but is called parallel imports by merchants, you can basically conclude that it is a refurbished machine.

To sum up, this paper focuses on the internal and external characteristics of walking machine and water machine, and introduces the identification method of walking machine and water machine. In the next part, the author will try to distinguish the experience of buying and selling mobile phone accessories. Because the author's level is limited, fallacies are inevitable, so I hope Samsung people will criticize and correct me.

Attachment: List of Samsung mobile phone network access license and equipment approval number (I and II). Due to the limitation of conditions, the author can't give all the contents of the columns listed in the table, and some data need further textual research. I hope people of insight can join hands with * * to finish the unfinished work of the author.

There is a concave envelope mark and a staff icon on the left and right direction keys of the navigation key, which is one of the external features of Samsung's mobile phone. In the past, we can use this to identify Samsung's mobile phone and water machine, but now it seems to be no good, because the author found that there are also concave envelope marks on the left and right direction keys of Samsung's new T400 and T508 navigation keys.

3. Keyboard. Samsung's mobile phones, Shuihang's and Hong Kong's have Chinese strokes on their keyboards.

The strokes are coordinated with the English letters of the same key, each Chinese stroke is directly above the middle letter, and the numbers, letters and strokes are transparent. This is also one of the external characteristics of Samsung mobile phones. There are no strokes on the keyboard of the general water reform machine. Before T400 and T500, the strokes of English version of mobile phones were usually added after JS. Because the keyboard design of the water reform machine is centered on English letters, the Chinese strokes added at the back must be left or right, which has a feeling of being squeezed hard. Appearance color is darker than numbers and letters, and it is generally opaque. Now, except for English versions T400 and T500, most keyboards of water reform machines are also transparent strokes. So I would like to remind everyone to pay attention when buying. Try scraping the strokes on the keyboard with your nails. If it is dropped, it proves that it is water and not goods.

In addition, the keyboard of the new machine feels more resilient and elastic, while the second mobile phone feels softer and has no toughness of the new machine.

4, PCB circuit board logo and mobile phone back post. Generally, the models of Samsung mobile phones are marked on the PCB in the SIM card slot, such as SGH—S308, SGH—S208, SGH-T108, SGH—T408, etc. And the European versions of SGH-300, SGH-S200 and SGH-T65438. There are also some Samsung mobile phones, such as T208, S 108 and so on. Although the model of the mobile phone is not marked on the PCB circuit board, the model of the mobile phone will definitely be marked on the back of the mobile phone, behind the SSN or in front of the serial number S/N.

Generally, there will be a white cotton swab on the screw hole of the fuselage on the back of the licensed goods, which reads eight big characters: "Repair sticker, tearing it is invalid".

Of course, it is not enough to judge whether it is a mobile phone only by the back sticker, because JS has a way to replace this back sticker. The author once witnessed a Samsung S 100 mobile phone with the label S 108 on the back.

Of course, there is still a difference between the back stickers on mobile phones in Hangzhou, Shanghai and Hong Kong and those posted after JS. If you look closely, you will find that the IMEI number of the water reform machine is printed very vaguely, but the printed goods are clearly visible.

5, mobile phone IMEI code. Imei (International Mobile Equipment Identification Code) is the abbreviation of international mobile equipment identification code, which is an "electronic serial number" composed of 15 digits, corresponding to each mobile phone one by one, and the code is unique in the world. Every mobile phone will be given a unique group number in the world after assembly, and this number will be recorded by the manufacturer from production to factory.

Its composition is123456-78-901234-5: the first six digits are "model approval number", which generally represents the model; 7, 8 digits for the "assembly number", generally representing the place of origin; The next six digits are "serial number", which generally represents the production sequence number; The last bit of 1 is usually "0", which is a check code and has been reserved at present. The IMEI code is attached to the sign on the back of the mobile phone and read and write in the memory of the mobile phone. It is also the "document" and "ID number" of the mobile phone in the manufacturer. Now Samsung's new models usually add two digits after the inspection code. For example, the IMEI code is: 351005/89/059521/9 ... 01.

To check the IMEI code of a mobile phone, first enter *#06# to check the IMEI code in the memory of the mobile phone, remember this number, and then enter *2767*3855# to reset the chip, and the mobile phone will automatically restart. Finally, enter *#06# to check whether this IMEI code has changed. If this number is consistent with the IMEI code on the back of the mobile phone and the outer packaging box, and the model approval number is consistent with the model of the mobile phone. If it is inconsistent, or becomes a string of garbled codes, or the instructions are not executed, it proves that the mobile phone is either a water-changing machine or a refurbished machine. The back chip reset function has been blocked by JS.