How to set the automatic time zone of mobile phone?

If you use an OPPO phone, the setting path is as follows:

Coloros version 3.0-5.0: Go to Settings >; Other settings (general) > time and date "can set the 24-hour clock, automatically determine the time and date, time zone.

Coloros version 5.2-6. 1: Go to Settings >; Other settings > time and date you can set the 24-hour clock, automatically determine the time and date, time zone and dual clock.

ColorOS 7 and above: Open the clock application, click the "More" icon in the upper right corner, and select Settings-Date and Time Settings to enter the date and time settings page.

24-hour clock: The default display of mobile phone clock is 24-hour clock. If the 24-hour clock is turned off, it will be displayed as 12 hour clock. ?

Automatically determine the time and date: the mobile phone will automatically check the time after networking. ?

Time zone: You can change the time zone and time by yourself after "Automatically determine date and time" is turned off. ?

Double Clock: When the double clock is turned on, when you are not in your usual place, the lock screen or clock desktop plug-in will display the time in two areas.

Permanent residence: click on the permanent residence and authorize the call of meteorological service to access the network, then you can choose the permanent city.

Double Clock Display Location: Click to display the double clock in the location below, and you can choose whether to use the clock desktop plug-in to open the lock screen to display the double clock.