Totally free. There is no need to install software, it only takes up the memory of the mobile phone. I may play when I just bought it, but I don't want to pretend after playing for a long time. Just install some necessary ones, such as QQ, Fetion and Qian Qian Listening. I installed deep uninstall, which can uninstall system software and delete unnecessary useless software. The installation of sd card does not affect the use of this computer as a hard disk. And super text messages. This SMS interface is very similar to Apple's. It's purely for the sake of beauty, and it's also very easy to use. Then there is the Baidu input method, which is also quite easy to use. There is also a measurement of latitude, longitude and altitude, which is needed for work. Then there are a few small games, such as watermelon cutting and racing. It's your choice. Except QQ, Fetion, these do not consume traffic, the game depends on your own choice. The games in it can be installed casually, and you can play them if you like, keep them if you like, and delete them if you don't like them. Moreover, you don't need to download software from your mobile phone and install them directly on your computer. Just connect your mobile phone to the computer's pea pods, which is very convenient. . . .