How to maintain the performance of mobile phones, please, 3Q.

Ten hidden functions in mobile phone 1, invisible spare battery Your mobile phone is low in power. To keep it in use, press the *3370# key and the phone will restart. After starting, you will find that the power has increased by 50%. When this hidden spare battery runs out, you have to charge it. When charging, the invisible backup battery is also charged at the same time, and this method can be used next time the power is low. If the battery of the mobile phone is low, it is very useful to know this in an emergency. Did you leave the car remote control in the car? Can you turn on the remote control of your car? If you can, you will find that one day you leave the car remote control in the car and the spare remote control is at home, so it is very convenient to have a mobile phone. Call your family's mobile phone with your mobile phone, and hold it one foot away from the car door. At the same time, your family will hold the remote control next to his mobile phone and press the unlock button on the remote control, so that your car door can be opened here. This method works no matter how far you drive from home. (7) I have tried it myself, which is very effective and amazing. 3. In case of emergency, mobile phones all over the world can dial * *' s emergency number 1 12. When you find that there is no mobile phone coverage in your area, and you encounter an emergency, it is right to dial 1 12 with your mobile phone, because at this time, you are right. What's particularly interesting is that you can still dial 1 12 even if your phone is in the keyboard lock state. Give it a try! 4. The mobile phone was stolen? High imitation iphone:/ There are ways that thieves can't use it, hehe! To view the serial number of the mobile phone, just enter * # 0 6 # and the serial number of 15 will appear on the screen of the mobile phone. Every mobile phone in the world has a unique serial number. Record the serial number and save it. One day, if your mobile phone is unfortunately stolen, call the mobile phone provider and provide your mobile phone serial number, and they will help you shield your mobile phone, so that even if the thief changes the SIM card, it still cannot be used, and your mobile phone will become useless to the thief. If every mobile phone holder in the world does this, there is no point in stealing mobile phones. In Australia, the police even set up a database of stolen mobile phones. If you find your mobile phone, you can return it to you. Necessary for daily maintenance: 1. Don't wait until the battery of your mobile phone is dead. Generally, we have an idea that it is best to recharge the battery of mobile phone after it is fully discharged, which is basically the case, because most of the rechargeable batteries we used in the past are nickel-hydrogen batteries, which have the so-called memory effect, and if they are not fully discharged and recharged, the battery life will be rapidly reduced. That's why we started charging with the last drop of electricity. Nowadays, most mobile phones and general IA products use lithium (Li) batteries, and there is no memory effect problem in lithium batteries. If the battery is completely used up before recharging, the chemicals inside the lithium battery will not react and the service life will be shortened. The best way is to charge it when you have nothing to do, and keep it in the best full state anytime and anywhere, so that your battery can last for a long time. This is the manufacturer's information, and I have tested it myself. 2. Don't answer the phone when the phone is charging! ! The reason is that it is potentially dangerous to answer the phone when the phone is charging. There is a 3 1 year-old young man in India who works as a business manager in an insurance company. 10 days ago, he answered the phone when the phone was still connected to the charger. After a few seconds, a lot of current passed through the mobile phone, and the young man was thrown to the ground. When the family found out, their fingers were burned, their heartbeat was weak and they were unconscious. After being rushed to the hospital, the doctor pronounced him dead. Mobile phone is the most commonly used modern invention at present. However, we should also be alert to the danger of instrument death. 3. Don't use a full battery when there is only one battery left. Compared with only one cell left, the transmission intensity increased by more than 1000 times. So ... people who often say mobile phones should pay attention ... 0. I got a very important message from a mobile phone manufacturer yesterday, that is, when you find that the reception intensity of your mobile phone is only one cell, you would rather hang up or change to a public phone. As we all know, the electromagnetic wave of mobile phones has always been a worrying problem. The design of mobile phone will enhance the intensity of electromagnetic wave emission, so as to maintain considerable call quality in areas with poor reception. When the reception is full and there is only one cell left, the transmission intensity difference exceeds 1000 times. The electromagnetic wave intensity is as high as 0.6W (Watt). How strong is 0.6W? I can't describe in detail what bad effect it will have on your head, but I can compare it with two examples: 1) Turn up the volume of the small radio with a horn about 4 cm in diameter and stick it to your ear. The noise energy is generally 0.25W, less than 0.5W W. 2) Put your finger at the output intensity of 0. 1W (equivalent to the optical fiber network? You will feel burning pain in a few seconds. Can you stand these two situations for a long time? Then how can you be sure that 0.6W electromagnetic wave will be fine if it is attached to your ear? 4. 12593+ phone number = trap Did you save the phone number of a foreign friend in the phone book in the format of 1795 1+ phone number? Instead of dialing alone? Then the charge will be changed from 0.39 yuan per minute to 65438+ 0.3 yuan per minute. I also checked with 1860. Their explanation is, if it is stored in the phone book? The system will not recognize it. So you can't get the preferential tariff. You must press 12xxx directly on the keyboard every time. Are all users of Shenzhouxing like this? M-zone users, so is GSM. If you are a mobile user in China, when you know that China Mobile has set the following trap for you, you won't be surprised why your phone bill flies away like a wing. You can get a discount by using 12593+ phone number, but if you save "12593+ phone number" in the phone book of your mobile phone in advance, dial it out when you use it, and then dial it out. At this time, China Mobile will not admit that you have used the preferential dialing method of 12593, but will charge according to the direct dialing method. If it is roaming, the difference between the two charging methods can be as high as 7 times! I really didn't know how to express my anger when I learned about this charge. Later, when I called 10086 for consultation, if I hadn't asked this question on my own initiative, the lady whose work number is 6608 didn't tell me about this charge at all. 5, the parasite of the mobile phone fee, the mobile phone has inexplicably set up useless text messages. It is strongly recommended that you check whether you have been recruited. The easiest way is to unsubscribe from the parasite who steals your mobile phone fee every month! China Mobile was forced to launch a new service on 3. 15. If you are a mobile phone user of China Mobile, enter the number "0000" and send a message to 10086. Within a few seconds, a short message list will be automatically replied, showing which short message services you have subscribed to on your mobile phone, and which short message service providers will deduct your mobile phone fee every month. Type the number "00000" and send a short message to 18620 1 to unsubscribe from all short message services. 6. Don't rush to be accurate to 1 minute. When we are on the phone, we are often glad that we finished the call just before 1:00, but this is not the case. According to a staff member of China Mobile, the call to 0: 55 is actually a minute, so the call time from 0: 55 to 1 point is actually. Please remember not to press any key action, especially to turn off the power (once you press any action, the water will flow away with the circuit board immediately). The correct way is to immediately open the cover, directly remove the battery, and directly force the power off to protect the motherboard from water. This common sense is very important, so I will tell you to make your hand work for a long time. Learn! In case of future emergencies! 8. How to bring the mobile phone battery back to life When your mobile phone battery has a shorter service life (memory effect or aging), will you buy another battery to replace it? Next time you meet this situation, please save your money and tell you a very effective method. Try it: 1) Wrap the battery in newspaper and put it in a plastic bag and put it in the freezer for three days (the newspaper can absorb excess water). 2) After three days, take it out and leave it at room temperature for two days. 3) Charge the battery two days later and put it in the mobile phone for testing (it is estimated that it can save 80%-90% electricity). According to the tested friends, the effect is quite effective. As for whether it is effective or not, batteries are almost useless anyway, and everyone has a refrigerator. Friends might as well give it a try! 9. Give your mobile phone a CPR! Does the mobile phone often run out of power? Or is it fully charged and then dead? I must doubt that I am still alive! It looks like a new one! Really useful for your reference! 10, teach you how to eliminate scratches on the screen of your mobile phone. Do you often encounter scratches on the screen of your mobile phone and don't know how to deal with them? Tell you a useful secret recipe ... (I saw it on TV the other day) Squeeze a proper amount of toothpaste on a wet rag, and then evenly spread it on the scratches on the mobile phone screen ... You will find that ... the scratches on the mobile phone screen will disappear ... Amazing! ! What's even more amazing is that ... after cleaning with a clean rag or toilet paper, the screen of the mobile phone will be bright ... Professor of Chemistry Department of National Taiwan University said: The principle is that toothpaste is only an auxiliary product for brushing teeth, which has the functions of rubbing (repairing), removing dental plaque and cleaning and polishing the tooth surface, so it will have the same effect when used on the screen of the mobile phone. Is the life of mobile phone over? Don't worry, it's just a temporary "cardiac arrest". Just a little eraser can bring it back to life! After taking out the battery, clean the contacts (brass sheets) on the battery with an eraser and put them back on the phone. You will find it really amazing! It turns out that the use and maintenance of notebook batteries all start with battery materials. At present, there are three kinds of batteries used in notebook computers: 1. Nickel-chromium battery, 2. Ni-MH battery and 3. Lithium battery; They are generally expressed as: nickel cadmium, nickel hydrogen and lithium. 1. The common way to activate a new battery manufacturer is that the battery of a new notebook should have 3% power when it is turned on for the first time. At this time, the remaining power in the battery should be exhausted without using an external power supply until it is turned off, and then charged with an external power supply. Then charge the battery after the battery is exhausted. The charging time must be more than 12 hours, and the battery can be activated only after repeated three times. 2. Minimize the use of batteries. The number of times a battery is charged and discharged is directly related to its life. Every time the battery is charged, it will take a step forward before it is scrapped. It is recommended that you use an external power supply as much as possible, and take out the battery when using the external power supply. If the power supply is plugged and unplugged many times in one day, the laptop is equipped with a battery, which is more harmful to the battery. Because every time an external power supply is connected, it is equivalent to charging the battery once, and the battery will naturally be dead. 3. Recharge the battery after it is exhausted to avoid charging for too long. Whether using lithium battery or nickel-metal hydride battery, the notebook must be recharged after the battery is exhausted (the battery is lower than 1%), which is the best way to avoid the memory effect. Lithium batteries also have a memory effect, but its memory effect is smaller than that of Ni-MH, and it will not be charged until the battery is completely used up. Partial charge and discharge may lead to inconsistent chemical properties of each cell in the battery, so the performance of the battery will decline. It is recommended to deeply discharge the battery every few months to optimize the performance of the battery. The specific way is to use the battery to supply power until the battery capacity is 0% (at this time, the system will automatically enter the sleep or standby state, depending on the settings in the BIOS). Then connect the AC charger until it is fully charged to 100%. After a long period of storage, the battery has a natural discharge process, which has been discharged naturally and does not affect the capacity of the battery. When charging for the first time, the battery should be continuously charged to 12 hours, and Wally should discharge the battery three times (refer to the section on battery maintenance) to completely wake up the new battery. If this battery has not been used for several months, it is recommended to charge and discharge it three times. If a battery can't be charged continuously for 12 hours or after three cycles of charging and discharging, the battery can't be used and needs to be replaced. Wake up: Get out of the eight misunderstandings of notebook battery maintenance. In the notebook computer, the battery is a component that people love and hate, which gives the notebook computer the ability to move. However, compared with mobile phones and MD that work continuously for several days or even a week, the battery life of notebooks is still staggering. If the battery of a mobile phone can only be used for 8 hours, it will definitely be reviled by thousands of people, but such achievements are already outstanding pride in notebook computers. Besides the keyboard, the slowest developing component in notebook computers should be the battery, so that there is a joke: Intel is supporting new battery technology through investment and technical participation. "For us, lithium batteries were good enough in the11990s," said Molly Eden, marketing director of Intel's mobile platform. The improvement of batteries is like the relationship between teenagers and sex: everyone is talking about it, but no one has done it. "Battery maintenance has always been a hot topic for notebook computer users, but in fact there are many misunderstandings, which ultimately come from two aspects. One is that "thinking has not kept up with the change from Ni-MH battery to lithium battery", and the other is funny, because mobile phones are actually the first devices that most users come into contact with using rechargeable batteries, so they will naturally extend some habits of mobile phones to notebook computers. I don't intend to train most notebook users into experts, which is unnecessary. I just want to clarify some misunderstandings that are easy to fall into and give correct views and practices. Thinking can't keep up with the change of battery. Myth 1: Buying a laptop requires repeated charging and discharging three times to activate the battery. Unless the laptop you bought is a product that has been in stock for more than one year, you don't need to do this, because the battery cell has been activated when it leaves the factory, and the cell has passed the test equivalent to activation when it is packaged into a notebook battery, so the battery you got has been activated, and it is meaningless to charge and discharge it three times to increase the battery loss. Myth 2: The first charge must be enough 12 hours. This is suitable for the early Ni-MH battery model without battery control circuit, but it is a joke for the notebook battery with intelligent charge and discharge control circuit now. When the notebook battery is fully charged, the charging current will be automatically cut off. Even if you continue to charge 120 hours, the state will not change. Generally speaking, even the slowest charging machine, instead, when you get a new machine, you should first discharge the electricity and then charge it. Myth 3: The battery needs to be calibrated regularly and charged and discharged completely once a month. This is a necessary work for Ni-MH battery with strong memory effect, but for lithium battery, this cycle is too frequent. Although the lithium battery did not completely eliminate the memory effect, it greatly weakened the memory effect. If the battery is used frequently, it should be discharged to a relatively low level (about 10~ 15%) for recharging, but if it is discharged to the point where even the machine cannot be turned on (0 ~ 0). If you seldom use batteries, just do it once every three months. Myth 4: Calibration can improve battery capacity. The so-called correction means that when the actual capacity of the battery is different from the capacity recorded in the control circuit, the battery is deeply charged and discharged, so that the control circuit refreshes the record and makes it close to the actual situation of the battery. This is an operation to display the true capacity of the battery instead of increasing the capacity. The key factor here is the actual capacity of battery. If the actual capacity of the battery is higher than the capacity recorded in the control circuit, calibration can increase the apparent capacity of the battery. If the actual capacity of the battery is lower than the capacity recorded in the control circuit, the calibration will reduce the apparent capacity of the battery, which is also the reason why many people argue endlessly about the calibration effect. Remember, calibration is to show the true capacity of the battery and eliminate the deviation between the battery and the control circuit. Whether the displayed capacity increases or decreases depends on the state of the battery itself, not your calibration. It is very likely that the battery capacity will be greatly reduced due to deep discharge damage during calibration. Many manufacturers provide battery calibration procedures. Windows version and BIOS version are available, and it is best to use these programs for calibration. Windows version can work at the same time, but BIOS version can't. Myth 5: compatible chargers can also use laptops. Power consumption is much higher than that of mobile phones. In the most extreme case, the power supply needs to charge the battery at the same time to meet the power supply required for the machine to run at full speed. Generally, there is no compatible charger for notebook computers, because the voltage, current and even interface of each model are different. A "compatible charger" that can be used in various notebooks is likely to be more expensive than the original charger. Even if the interfaces are the same, if the voltage and current are lower than the nominal value of the machine, the battery may not get enough charging current when the machine works at full speed, which is very harmful to the battery. If the voltage and current are much lower than the nominal values, you may even find that you can't start the machine at all, or you can start it but you can't charge it. Therefore, when choosing the power supply, it is best to choose the same as the original factory. If it is not found, please note that the voltage and current must conform to the nominal values of the machine. The interfaces of different products in the same factory are generally the same, but the voltage and current may be different. Please pay attention to this! Myth 6: The battery needs to be fully charged (or discharged) to be stored. Whether it is fully charged or discharged, it is actually incorrect. Long-term storage of discharge light will make the battery lose its activity, and even lead to self-locking of the control circuit, which will bring security risks. The most ideal storage method is to discharge to about 40% before storage. Lithium batteries are afraid of humidity and high temperature, so they should be stored in a cool and dry place, but the temperature should not be too low, otherwise the capacity will be greatly increased. Myth 7: If the battery is not working, you can change the battery yourself. Many people's batteries are so deadly. The manufacturer seems to have expected someone to do so. Many brands of notebook batteries are designed with self-locking function. Once the battery is separated from the control circuit, the circuit will enter the self-locking state, which can only be unlocked by special means. Before this, the control circuit will not work, that is to say, the battery is equivalent to scrap, and the notebook battery is not a dry battery that can be replaced at will. If you must change the battery, please remember to find a special battery maintenance company to handle it. It is a trivial matter to change it yourself. The frustration and frustration after the failure of that kind of effort is the worst. Myth 8: 100% has not been charged after 99%, and there is almost no possibility of explosion if the notebook battery continues to be charged. At most, it will emit high heat, which will cause the shell to melt, but it will rarely cause an open flame. A few accidents that have been announced are actually caused by poor production technology and short circuit in use. Even if most of these short circuits are disconnected by the protection circuit in the battery, they will not be damaged more. Unless the battery is short-circuited before the protection circuit (it should be caused by the battery explosion time of Compaq notebook before), I have only seen two such cases in the three years when I have been in extensive contact with notebooks. On the contrary, there are many such things in the mobile phone. In the final analysis, it is still the quality of the battery. There are a lot of inferior assembled batteries in mobile phones, and notebook computers almost never sell such batteries, because no model has enough electricity to produce compatible batteries. The reason why the charge after 99% is less than 100% is often because the record of the battery control circuit is different from the state of the battery itself, and the battery has never reached the voltage recorded by the control circuit, so the control circuit has been charging, but the battery is actually full. This problem can usually be solved by correction, but it doesn't matter even if it is not corrected, because most charging circuits will automatically disconnect after a long time. Even if the current 99% refresh rate of intelligent automatic recording is 100%, even the stupid design that keeps going is harmless, because the current at this time is very small. At present, there are basically temperature detection circuits in the batteries of notebook computers. When the battery temperature is too high, most control circuits will forcibly disconnect the battery to prevent the temperature from rising further, so the probability of battery charging explosion of notebook computers is no less than winning the lottery. No matter how scientific the maintenance measures are, the battery will age. No matter how magical cosmetics and maintenance are, they can't stop beautiful women from becoming old women. At most, they just delay. The only way to avoid battery aging is not to use it (so many people will choose to take it off), but this will make the notebook computer meaningless ... The battery always ages with the extension of use time, and it is actually a semi-consumable. Therefore, almost all manufacturers' laptops are generally guaranteed, regardless of the warranty period of the host. If the battery is properly maintained and used once a week, it can still maintain 60%~70% capacity after one year, which is probably the case with my own battery. If you really think it is torture for you to watch the battery languish, the best way is to take it off and pray that there will be no power failure or kick off the plug, or buy an extra one. As long as batteries and notebooks bring enough value and happiness, I think they will be sacrificed. It is true that files (folders) can be encrypted directly in Windows XP, but this requires a premise: the hard disk partition where the files (folders) to be encrypted are in NFTS format. If your hard disk partition is not in NFTS format, please convert the operation and encrypt it as follows. Select the file (folder) to be encrypted, click the right mouse button, and select the "Properties" option in the pop-up shortcut menu. In the General tab, press the Advanced button to open the Advanced Properties dialog box, select the option "Encrypt content to protect data", and then confirm to exit. It is especially important to remind that if the file (folder) is encrypted by the above method, it is best to decrypt it before reinstalling the system in the future (decryption is similar to encryption method), otherwise the file (folder) may not be opened normally after reinstalling the system.