Pay attention to the problem when purchasing a mobile phone for goods (Comprehensive)

This article takes Nokia 6600 as an example to describe in detail some of the issues that should be paid attention to when purchasing a pay-as-you-go mobile phone.

This article takes Nokia 6600 as an example to describe in detail some of the issues that should be paid attention to when purchasing a pay-as-you-go mobile phone:

1. First of all, we need to get out of a misunderstanding. what you usually see when you buy a machine is * #06 # to differentiate the origin. The seventh and eighth digits of the serial number indicate the origin of the mobile phone, nokia code: 10: Finland; 20: Germany; 30: Korea; 40: Beijing; 60: Dongguan, however, the new Nokia mobile phone no longer uses this number to identify the origin. In the standby status of the mobile phone, enter #06 #. A string of numbers displayed on the mobile phone is the motherboard serial number, write it down; remove the sub-battery of the machine, and check the white label on the two labels behind the body, that is, the shell serial number. The other label is generally the inbound license. Check whether it is consistent with the preceding number. Check the IMEI number on the sub-box and compare the three to see if they are consistent. If the motherboard serial number is different from the chassis serial number, this machine is likely to be repaired or assembled by parts and cannot be purchased. If the three serial numbers are the same, and a network access license is added, this basically proves that this machine is genuine, but it cannot be totally affirmed, because javascript can be fake at all times, the motherboard serial number can be written in a computer or software. Fake serial number labels and network access licenses can be purchased for a few dollars. For the sake of prudence, you should continue the verification as follows.

2. Many people who have used Nokia machines will also know a command, that is, enter the command * #92702689 # in the standby mode. However, this command is provided by the Nokia s40 host in the standby mode ~ Enter the engineering mode of the machine ~ Here, life timer indicates the total call time of the machine ~ Recyclred indicates the repair information and so on ~ However, this command is invalid on Nokia s60 machines.

3. check whether there are dial marks at the lock of the battery body, whether the SIM card slot and contacts are worn out, and whether there are marks at the mmccard contact points. The brand new one should be bright.

4. Check the outer packing and instruction manual of the machine: the packaging and instruction manual of the regular new machine are beautifully printed, mostly for coated paper. The fonts and images are very clear and have a sense of excitement, however, fake packaging boxes are mostly made of simple single-sided paper. The fonts and images are rough, and the printing handwriting is blurred. Many non-formal conversion manuals are even copied. There are also some refurbished machines, although using the original genuine packaging box and instructions, but after all the machines are old, their packaging box must be worn out, there must be traces of use of the manual, pay more attention to the purchase and you will be able to find out.

5. Check the network access license: There is a watermark on the network access license, the surface color is uneven, there is a deep and shallow, there is a thick and fine; while the fake is mostly copies, the surface color is not changed. If you cannot see it, you can also use the money detector to take a picture of the network access license. There is a real anti-counterfeit pattern that will show a red "cmii" pattern. Fake patterns are blurred. The true net access certificate is usually printed with a needle printer, the number is clear, carefully look at the concave marks of the needle, and the false net access license is printed by a general printer, the number is not very clear, no concave marks. In general, it is difficult to fake a network license. After all, the equipment required for counterfeiting is relatively high in cost. In addition, you can query the Internet to verify the authenticity of the network access license, which is not described in detail here.

 

6. Watch the mobile phone shell: When you open a new machine, you will obviously notice that the "key parts" of the machine are all protected by film, such as internal screen, external screen, and camera head, as long as these parts are exposed, fingerprints will be left. when you see the fingerprint on the new machine, do not listen to any explanation of Js. In addition, the dust and usage marks are also unavoidable in the same way as the refurbished machine. The gap between the upper and lower case of the machine (generally about 1MM) and the gap around the keyboard, there are also charger slots and other places are easy to "dirty" places, flip the machine's shaft will also leave traces of use, also pay special attention.

Refurbished machines generally use the shell is imitation of the original, or the old shell carefully processed, so the two parts before and after the chassis is very easy to appear closed tight, leaving a lot of seams, the identification method is to use the fingernails to try whether to insert the seams on and off the mobile phone. If it can be inserted, it is to assemble the shell. For a machine without a shell replaced, before JS is sold, it is sprayed with a mist agent like a detergent. The surface of the old shell immediately shows a frosted effect like a new machine. If you do not check it carefully, javascript will be confused, but it won't take long for the shell to be painted off. When buying the shell, you must carefully observe the shell, because the JS process is good and there is no advanced equipment from the original factory, if you look at it carefully, you can see that a small particle is dust, because the painting is not in the vacuum room.

If it is a flip machine, you can also check the combination of the flip, because sometimes even if JS treats the machine surface well, these places will inevitably leave some dust marks. In addition, check whether the body screws are brand new and whether there are any traces of screwdrivers being screwed. It should be noted that many new mobile phones have an obvious sandalwood flavor, and the old and shell-changing machines do not have such a smell, or the odor left by working hours, the new machine will have the Sandalwood flavor, different from the general detergent and perfume flavor. The body cannot contain sticky wax and oil (If yes, it will be beautified by JS ).

7. view the screen sticker: The brand new sticker should be well pasted, without bubbles.

8. Watch mobile phone accessories: Regular manufacturers of new machines have a full set of original factory accessories, at least one power and one charge. The accessories for refurbished mobile phones are generally incomplete or not from the original manufacturer. before purchasing a mobile phone, it is best to go to the relevant website to learn about the factory accessories that are standard, so as to prevent JS accessories from being deducted. In addition, check that there are scratches on the matching charger and the plug of the headset. Generally, the old machine must be fully charged. You can still see the difference. Check whether the ear plug of the mobile phone is black, if yes, it may have been refurbished or used.

9. view records: check whether there are any used records of games, text messages, phone books, call records, self-edited ringtones, WAP and voice functions, and call records on mobile phones, if there is one, there is a lot of suspicion of renovation. In addition, during normal use, the host automatically shuts down or crashes frequently, so it is certain that the motherboard or software of this mobile phone has some problems.

10. Warranty: Ask the dealer about the warranty period of the machine and ask for a formal invoice. Refurbished mobile phones cannot enjoy all the benefits stipulated by the regular "three-pack". Therefore, there is generally no warranty period or the warranty period is relatively short. If the seller says they are responsible for the warranty, they cannot accept it because regular mobile phones are generally provided by the National warranty service. If the seller cannot do this, there must be problems with the mobile phone.

11. Watch the price: before purchasing a host, you 'd better check the price of your mobile phone in a local newspaper or website. If the price is very cheap, be cautious, in this way, "cheap" mobile phones are neither cell phones or non-formal channel products nor accessories ".

Battery, charger, and earphone identification:

1. The color of the original electric packaging skin is relatively dark, it is matt paint, the color of the assembled electricity is relatively bright, because the middle contains phosphor.

2, the original electric BL-5C contacts next to a small dot, BL-4C is not, this is very important, please note.

3. When buying a battery, you can use a nail to push the edge of the wrapped skin. The original power won't start skin, and the group power will certainly be.

4. The color of the original electric contact is Matt, but it is not bright. There will be scratches once the battery is used.

5. Generally, the battery labels on licensed mobile phones sold in mainland China are printed in simplified Chinese, while many of the battery labels on the battery are sold in foreign countries, so the labels are in English. Some sellers use fake batteries to replace real batteries, which are printed in Chinese. However, the work of the fake battery is very rough, while the real battery looks neat, there is no extra glitch, the outer surface has a certain roughness and comfortable feel, the internal surface feels smooth, fine Vertical Scratches can be seen under the light. Moreover, the battery labels are clearly written, and the battery labels correspond to the battery type. The labels are clear in the fonts of the manufacturers, and the anti-counterfeit labels have a good brightness and look like they are stereoscopic.

6. The price of the original power is generally no less than 100. If the price is low, pay attention to it.

Nokia headphones and general headphones are different, when buying good quality, genuine headphones work very fine.

The above describes how many items are used, but you should pay attention to the following points during the purchase:

1. test: the seller will often agree to your test, but will usually give you a card for you to call for free. Remember not to use their cards at this time, you can use your own cards to play a call to your friends. You must try the call quality more. You must also try the call for a long time to check whether there are any problems with all aspects of the machine. Once you leave the counter, it is very troublesome to change the machine again.

2. Remember to take a full-black photo during the test, or you can take a full-black photo on your hand to see if there are any bad points on the screen. The bad points are divided into many colors, it will remain jittery, although it does not affect the use, but your screen will not be used too long.

3, check accessories, machine, a battery (BL-5C 850mA), has been Chong, an mmccard (32 m), manual, two disc, one earphone.