What are the hidden functions of mobile phones?

Few people know the four hidden functions of mobile phones. Mobile phone use tips, so that your mobile phone will always have electricity! ! ! 1. Invisible spare battery Your mobile phone is low in power. To keep it in use, press the *3370# key and then press the dial key ~ ~ 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 * * * key on the remote control, and your car door will open here. This method works no matter how far you drive from home. 3. In case of emergency, mobile phones all over the world can call * * * emergency number 1 12. When you find that there is no cell phone coverage in your area, it is correct to dial 1 12 with your cell phone in case of emergency, because your cell phone will automatically search all available networks and set up an emergency call. 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? There is a way that thieves can't use, 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 effects it will have on your brain, but I can use two examples instead. 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. 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 ensure that the 0.6W electromagnetic wave will stick 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 the phone number of 12593, but if you store the phone number of 12593 in the phone book of your mobile phone in advance, dial it out when you use it. 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, Sister Xiao, 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, in fact, when you talk to 0: 55, it is counted as one minute, so the call from 0:55 to 1: 00. Please remember not to press any key action, especially to turn off the power (as long as you press any action, water will flow with the circuit board). 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 the service life of your mobile phone battery becomes shorter (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 after two days. The news was revealed by an engineer from a well-known battery manufacturer. 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 wonder if the life of the mobile phone is 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 really came back to life! It looks like a new one! Really useful for your reference! 10, teach you how to eliminate scratches on your mobile phone screen! 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 toothpaste on a wet rag, and then smear it back and forth on the scratches on the screen of the mobile phone ... You will find that ... the scratches on the screen of the mobile phone 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 a rubbing effect (repairing and removing dental plaque, cleaning and polishing the tooth surface, so it will have the same effect when used on the screen of the mobile phone. . 1 1. An important common sense told by the maintenance staff can provide you with emergency tips when the mobile phone is about to commit suicide, which can make it difficult for the mobile phone to bid farewell to the world. :! Please remember not to press any button when the phone is flooded, especially when it is turned off (once any action is pressed, 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 tell you, let your hand function for a long time. Learn! 12.a. How to set N alarm clocks: As we all know, 5300 ordinary alarm clocks can be set from Monday to Sunday, but they can only ring once a day. I'll give you a remedy, that is, set a memo from the calendar, and then choose to repeat it every day to realize another kind of "alarm clock". 0 W5 h * E7 o & amp； T5 h' V The specific remedies are as follows: menu-transaction manager-calendar (select a day, and then click to see if there is a memo written in it)-click Add to select a memo, and write a memo at will, and the date can be selected today. Will prompt the alarm clock, and the alarm clock time will be set by itself. The most important thing is to choose one of the options of repeating every day, repeating indefinitely and saving last. So you can set two alarm clocks, and by the same token: as long as you are not bored, you can set more than N alarm clocks every day. B how to set ~ change ~ wallpaper: set-display-wallpaper-slide group-open memory card-folder x "The premise of setting this wallpaper is to create a new folder x for the pictures in the memory card"13. Nokia 5300 is on the button. 2. In the standby screen, press and hold the right soft key (you can also press and hold the Answer/End key on the headset when connecting it) to start speech recognition. 3. In the standby screen, long press the camera key will directly enter the camera state. 4. In the standby screen, press and hold the * key to connect the Nokia homepage, press and hold the 0 key to connect the homepage, and press and hold the # key to switch the number 1 and the number 2. 5. On the standby screen, press and hold the 1 key to enter the voice mail, and press and hold the 2-9 key to speed dial. 6. After entering the menu, when ... is displayed in the upper right corner, you can press the number keys to quickly enter the menu, for example, press 1 to enter information, and press 2 to enter the address book.