How to restore battery on mobile phone

A post about the hidden functions of mobile phones has been widely circulated on the Internet. The post introduces many attractive functions of mobile phones: just press a series of digital symbols to restore half of the battery of a mobile phone that is already dead. When the battery ages, just put the battery in the refrigerator for a few days, and after taking it out for processing, it can restore more than half of the original battery capacity; in order to prevent the phone from minor problems, you can use an eraser to wipe the battery contacts , the phone can be completely renewed. Yesterday, reporters tested and verified these claims one by one and consulted relevant professionals. They found that most of these so-called hidden functions are unreliable. Professionals also reminded mobile phone users that the service life of mobile phone batteries is currently limited. , it is unlikely that some method can be used to extend its life, and with the low cost of batteries, there is no need to do so. Function 1: Pressing a string of symbols can make the phone "call"? The online post stated that when the battery of the mobile phone is low, in order to continue using it, press the *3370# key and the mobile phone will restart. After the startup is completed, you will find that the battery power has increased by 50%. "This is the backup hidden in the mobile phone battery." The battery needs to be recharged after use. This is very useful in emergencies.” Reporter’s test: Ineffective! According to the online post, the reporter used multiple mobile phones for testing, but all failed. After dialing *3370# on the iPhone 4, the screen of the phone immediately went dark, and then a warning banner appeared, "An error occurred while executing the request, unknown error." After dialing the number on the Nokia E71, a warning banner prompting an error also appeared. Industry insiders: Only improve voice quality under certain conditions. Yesterday afternoon, the reporter consulted Mr. Chen, who is doing mobile phone repair business on the first floor of Nanjing Lion Electronics Mall on Zhujiang Road. After hearing the reporter’s inquiry, he immediately picked up several phones in the store. Testing on mobile phones also failed. Later, he informed the reporter through inquiries that the "3370" command did exist in the mobile phone, but it had nothing to do with the battery. "After turning off this function, the call quality will be reduced, but the battery life will not be significantly extended, and this function It only works if your network operator supports it.” Function 2: Can the capacity of an aging battery be restored after freezing? The online post stated that when the battery life of the mobile phone becomes short, you can wrap the battery in newspapers, wrap it in a plastic bag and put it in the freezer for three days. After three days, take it out and leave it at room temperature for two days, and then recharge the battery. After completion, you will find that more than half of the phone's battery capacity has been restored. "This information was disclosed by engineers from a well-known battery manufacturer, and friends who have tested it pointed out that the effect is quite good." Reporter test: no obvious effect. In order to verify this statement, the reporter will I took out the mobile phone I bought four years ago and took out the battery. This battery can only be used for six or seven hours under normal circumstances. According to the steps posted on the Internet, the reporter followed them one by one. After putting the battery into the mobile phone to charge yesterday morning, he found that the battery capacity did not increase significantly after using it. It only lasted less than 7 hours before it was declared low on power. Industry insiders: Battery life is limited. Mr. Cao, who is engaged in mobile phone repair at Henderson Communications Market, No. 12 Danfeng Street, said that he has heard of this statement for a long time. Although he has not personally tested it, from a professional perspective, this statement is unreliable. . "Currently, mobile phones use lithium batteries, which are very convenient to use. You don't need to wait until they run out of power to recharge. However, there are also disadvantages, that is, their lifespan is short." Mr. Cao said that although there are some methods to improve the usage of the battery, they can Such a magical way to extend the service life of a battery should still not exist. "The number of times a lithium battery is used is basically fixed. At that number of times, the molecular arrangement microstructure inside the battery is gradually destroyed, and the ability to store charge is gradually reduced, that is, Said the battery performance has become worse. "Function 3: Can the eraser bring the phone back to life? The online post also showed you a way to bring your phone back to life: When your phone frequently loses power, or it runs out of power shortly after being fully charged, just use an eraser to wipe the brass contacts on the battery. After reinstalling the phone, you will find a magical effect, "It actually came to life! It still looks like new!" Reporter's test: There is no reason to find a mobile phone with this condition, so the test cannot be carried out. Industry insiders: Little effect Regarding the claim that erasers can bring mobile phones back to life, Mr. Cao said that although this approach has some truth, it will not have much effect on mobile phones.

Mr. Cao said that the reason for this situation is generally due to defects in mobile phone design. “Some copycat mobile phones or brand phones are eager to go on the market to seize the market, and will rush into the market without being fully tested, which will cause this kind of problem.” "The method of wiping the battery brass contacts with an eraser is to wipe off the oxides on the brass sheets. Although these oxides will have some impact on the battery's power transmission, the impact is not significant, so even if Even if you wipe it off, it will not have the effect of "bringing the dead back to life" as mentioned in the online post