How to see whether a mobile phone is good or not, and how to choose a mobile phone.

Look at the cpu frequency and the number of cores: for example, the cpu with 600mhz frequency is entry-level, and the daily application is a bit stuck, so playing Angry Birds is not smooth enough. The cpu from 800mhz to 1Ghz( 1000mhz) is the mainstream level, which is a turning point in cpu performance. Daily applications are relatively smooth, playing some small and medium-sized games is no problem, and large games are still not. The cpu above 1Ghz can generally play most games, and there is no pressure in daily application. As for the dual-core cpu, don't worry too much about the main frequency. 800mhz dual-core cpu will not be weaker than 1.4Ghz single core, which can kill all applications and games.

Look at the memory size (RAM): The RAM here is equivalent to the memory bank of a computer, and the bigger the better. 256M is the entry level, 5 12M is the mainstream, and 1G( 1024M) is the high end. The cpu and memory of general mobile phones are quite suitable, and high-end mobile phones will not only use 256M memory; ?

Operating system: Android, Apple ios, Saipan, windows phone.

Home screen parameters/screen resolution: high-end smartphones have at least 800x480 resolution, or 960x640 is similar to iphone4 and Meizu M9;

Camera: see if you have a flash, 8 million pixels is the mainstream; 6. Headphones: The interface is preferably 3.5mm, which is universal. ? The entry-level mobile phone is less than 1200 yuan. 1the mainstream of 500 yuan. High-end at least 2000 yuan. The battery is not configured. If you want a long battery life, buy more.

Buy a mobile phone can refer to:

1, can't blindly pursue new:

Due to the rapid development of communication technology, the mobile phone just listed is not fully mature in technology and its functions are not perfect. If you only pay attention to "new" in order to catch up with fashion, the mobile phone you just bought may be eliminated in an instant. On the other hand, the prices of new high-end mobile phones are generally ridiculously high at the initial stage of listing. For example, the price of Motorola V998 was 1000 yuan when it was first listed, but it didn't take long for the price to drop to more than 3,000 yuan. Therefore, it is very important to choose the right time. In addition, there is not much difference in sound quality between high-end machines and low-end machines. As far as GSM system is concerned, there is a sense of drift and emptiness when talking, so there is not much difference in sound between low-end machines and high-end machines with a difference of several thousand yuan or even ten thousand yuan. ?

2. Don't think that the more expensive a mobile phone is, the better:

The conventional consumption concept may think that the higher the price of a mobile phone, the better its quality and performance than other types of products, but this is not the case. The more expensive a mobile phone is, it doesn't mean that the signal reception and sound quality will be better. Its expensive value is often based on the auxiliary functions of mobile phones, such as voice dialing and built-in modems. However, not all functions are applicable to all consumers, so you should know in detail and make more comparisons before buying. There are still many "cheap" mobile phones on the market. ?

3, can not listen to the seller's one-sided words:?

In order to get more high profits, many mobile phone sellers often use fakes and parallel imports to deceive users who have never touched or just bought mobile phones, and even brag about how good their mobile phones are, and may even "perform" several functions on the spot to lure you into taking the bait. At this time, we can't listen to the seller's one-sided words. Be sure to check all the reference elements of the mobile phone one by one and carefully check the attached product introduction. ?

4. It's best to go to a regular place to buy a mobile phone: Because the mobile phone market is full of fakes and parallel imports, especially those self-employed and private enterprises with unknown purchase channels, in order to engage in unfair competition, they use fakes and parallel imports to depress market prices and obtain explosive profits. In addition, if we buy these parallel mobile phones, we will not only be unable to use them normally, but also have nowhere to maintain them in the future, because all mobile phone manufacturers guarantee fake mobile phones. So don't be greedy and cheap, you should go to a regular place to buy a mobile phone. There are many mobile phone shops, large and small, and some online shopping malls opened by regular companies. When we buy a mobile phone, we must confirm that it is a genuine mobile phone with a one-year warranty.

5. Pay attention to the usage time and battery of the mobile phone:?

The longer the phone calls and standby time, the better. This requires not only large-capacity battery or dual-battery mode, but also low-power microchip technology. The combination of the two can really extend the call and waiting time of mobile phones. Moreover, the life of the battery is related to the number of times of charging and discharging. Because the mobile phone using low-power microchip technology has a long service time, the life of the battery is correspondingly prolonged. ?

6. Find out the function of your favorite mobile phone in advance:?

I believe that before buying a mobile phone, users will definitely go to various mobile phone manufacturers to take a look at the styles and prices. Once they take a fancy to the style they like, they will definitely ask about the various functions of the mobile phone. In fact, this is a very important part of buying a mobile phone, because only by explaining the exact function of the mobile phone in detail can we not be confused by the specious words in the advertisement. For example, some mobile phones claim to store 250 phone numbers, but consumers only store 20 numbers when they buy them. After careful reading, they found that "the SIM card can store up to 250", but the mobile phone itself can't store a few. ?

7. It is best to choose a mobile phone that can use ordinary batteries:?

People who are often outdoors and often make phone calls often have the experience that the mobile phone is playing hard, and the battery suddenly dies, but they can't find a place to charge it immediately. These people can choose a mobile phone that can use ordinary batteries. ?

8. Access to the appropriate mobile communication network:?

At present, the networks opened in China include ETASC analog network operated by China Mobile Communication Company, GSM digital network operated by China Unicom Company, AMPS analog network and CDMA digital network operated by China Great Wall Mobile Communication Company, and global satellite network (iridium satellite system). There are so many networks, but you only choose one. Who is best for you? You'd better consult an expert, who can objectively introduce you to the performance and characteristics of each network. After you know the advantages and disadvantages of each network, I will recommend you to join the appropriate network according to your actual situation. ?

9, the correct choice of mobile phone battery:?

Mobile phone battery is an important accessory in mobile phones. Choosing a good mobile phone battery can use the mobile phone more efficiently. So how to buy genuine high-quality mobile phone batteries has become a topic of great concern to our mobile phone users. Authentic mobile phone batteries generally have the following appearance characteristics: a, the width of battery electrodes is the same as that of mobile phone battery pieces, and the isolation material between battery charging electrode pieces is the same as the shell, but not integrated; B, the battery case is made of special material, which is very strong and not easy to be damaged. Generally, it is not allowed to open the battery manually; C, the white place on the surface of the battery paste is lightly scratched with a metal object, and there are traces similar to pencils; D, the battery label adopts secondary printing technology. In a certain light, from the side, it is obvious that the color of the bar code part is darker than the rest. In addition, you should also pay attention to buying mobile phone batteries. First, the nominal voltage of the mobile phone battery should match the voltage of your mobile phone. At the same time, we can start the experiment. The second is to ask the dealer for the documents about the random inspection of this kind of battery by the technical quality supervision department. Its indicators, including battery capacity, are clear at a glance, from which you can check the battery capacity indicators. The third is to pay attention to saving the warranty card. Under normal circumstances, the mobile phone battery should be guaranteed for at least half a year. If there are any quality problems during this period, you can contact the dealer to return the goods. ?

10, guarantee to get after-sales service:?

Only by establishing a perfect service system can we really relieve the worries of mobile phone users in China. In general, the warranty period should be one year from the date of purchase. The maintenance cycle is related to the maintenance level of the seller and the spare parts and technical support of the manufacturer. Some manufacturers guarantee a one-year warranty by "changing the machine", which may not be realized one by one in terms of cost. Please confirm with the dealer when purchasing. Therefore, it is ideal for us to choose a manufacturer with a national after-sales service system. In the future, if there is a problem with the mobile phone, you can get the service in time, and you are confident after buying it.