How to set up natural disaster warning for oppo mobile phones?

The natural disaster early warning method for Oppo mobile phone is as follows:

Operating environment: oppo neno7, ColorOS 13.0, and settings.

1. Click Security in the phone settings menu.

2. Click sos emergency contact option, and then click natural disaster warning.

3. Turn on the switch on the right side of the earthquake alarm.

Characteristics of natural disasters:

When a disaster is about to happen or has already happened, it always presents the characteristics of bad environment and pressing time. It is unrealistic to warn and guide by word of mouth. With the help of traditional broadcasting equipment, the geographical limitation is too large, and the coverage of wireless FM broadcasting is limited, so the signal transmission cannot be guaranteed in bad weather environment.

Using electronic large screen to establish a publishing system, one is that the input cost is too high, and the other is that it is difficult for someone to stop and read the published content carefully in an emergency. Therefore, a set of digital voice disaster early warning broadcasting system jointly managed by cities, counties (districts), towns and villages is established in rural areas.

Establish an effective emergency broadcasting system in large public places, tourist attractions, large communities, urban traffic roads, subways, industrial and mining enterprises, crowded office buildings, etc. It is the only choice to reduce disaster losses.