For mobile phone, tablet computer users, the biggest trouble is not able to access the Internet, I am afraid that the power is not enough, charging time is too long! So why isn't the battery durable? Let's have a look! In the past seven years, mobile phones have undergone a transformation from functional to smart phones, and the role of mobile phones in life is becoming more and more important However, the rapid development of mobile phones, performance and other aspects have achieved rapid development, except that battery technology has been developing slowly, which has also become an important reason for restricting the further development of mobile phones.