Android devices can directly set up web proxies without account password authentication, but if you need to use global proxies or proxy certain apps, you will need to use proxy tools such as v2rayNG. You can download and install v2rayNG from Google Play.
Open v2rayNG, click the “plus sign” in the upper right corner, and the types of proxies you can add will be displayed. Select the proxy type you want to use, such as socks, and click to enter the configuration interface.
Fill in your proxy information and click the “√” in the upper right corner to save it
Click the “Menu” button in the upper left corner, then click on "Settings" in the menu to set the DNS to 8.8.8.8
Select your profile and click the “Start” button in the bottom right corner.
A pop-up prompt will appear when using it for the first time. Click “OK” to proceed.
Then open your browser and visit an IP detection website, such as https://api.ip.cc.