Enter Settings-Other Networks and Connections/More Settings-Turn on the OTG switch, connect one end of the OTG cable to the charging interface of the device, and connect the other end to a mouse, USB flash drive or other external devices for use.
note:
If it is not used for more than 5 minutes, OTG will automatically shut down;
Some devices (such as mobile hard disks) have high requirements for power supply, and the power supply of the devices may not meet the requirements;
There are many brands and types of external devices on the market, so it is recommended to test them before buying.
How to download videos:
Videos can be downloaded from websites or players.
For example, "iQiyi", download and install the iQiyi client, find the favorite movie or video resource, click "Cache", and then click in the download list to play offline (some offline caches downloaded by players cannot be viewed directly in the file management of mobile phones);
You can also search for video resource downloads in the browser, and the resources downloaded through the browser can be watched through the video player that comes with the system.
If you still have more doubts, you can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.