Can an old mobile phone and a novice answer both phone calls and text messages after changing their mobile phones?

No, only mobile phones with mobile phone cards can receive calls and text messages.

Mobile phone is a communication tool and a portable phone that can be widely used. 1958, Soviet engineer Leonid Kupriyan Norwich invented лк- 1 mobile phone.

1973, Motorola engineer marty cooper invented the world's first commercial mobile phone. Mobile phones are divided into business mobile phones, video mobile phones, learning mobile phones and elderly mobile phones. So far, it has developed into the 4G era.

Judging from the number of active users in the mobile instant messaging market, the number of active accounts in the mobile instant messaging market in the second quarter exceeded 200 million, reaching 20160,000, an increase of 25. 12% from the previous month, which achieved very rapid development.

The data shows that the market structure of active accounts is similar to that of cumulative accounts. Mobile QQ still ranks first in the industry with an absolute advantage of 60.44%, while Fetion and MSN rank second and third, with market shares of 2 1.98% and 12.55% respectively. Analysys International believes that the number of active users of mobile instant messaging will continue to grow.

Smart phone means "like a personal computer, it has an independent operating system, most of which are large-screen machines and touch capacitive screens, which are powerful and practical." Users can install programs provided by third-party service providers, such as software and games, and continuously expand the functions of mobile phones through such programs, so as to realize wireless network access through mobile communication networks.