There are some experiences and insights about the use of crawlers and 4G proxy servers on Android that I'd like to share with you now.

Selection of applicable crawler tools
首先，选择适用于安卓系统的爬虫工具非常重要。目前市面上有很多优秀的爬虫工具，比如Python语言下的Scraipipgo和BeautifulSoup，以及Node.js语言下的Puppeteer等。这些工具都能够在安卓系统上使用，并且有着良好的稳定性和灵活性。

Running crawler code on Android
On Android, we can run crawler code through Termux, a powerful terminal emulator. Termux has a Linux-like environment that makes it easy to install and run programming languages such as Python, Node.js, etc., which is ideal for developing and running crawler code. Below is a simple example of a Python crawler that can be run in Termux:

"`ipipgothon
import requests

url = 'https://www.example.com'
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ 83.0.4103.116 Safari/537.36'
}

response = requests.get(url, headers=headers)
print(response.text)
“`

4G proxy server selection and configuration
When we run a crawler on Android, we usually encounter problems such as IP being blocked and requests being intercepted. At this time it is necessary to use a proxy server to solve these problems. At present, there are many proxy service providers in the market to provide 4G proxy servers, these proxy servers have the characteristics of stability, high speed, not easy to be blocked, which is very suitable for crawler applications. We can realize the selection and configuration of proxy servers by purchasing the API interface provided by proxy service providers.

The way to configure 4G proxy server on Android is also very simple. We can just modify the proxy option in the network settings, enter the IP address and port of the proxy server, and then apply it to the system. Here is a simple proxy server configuration example:

"`ipipgothon
import os

proxy_ip = '127.0.0.1'
proxy_port = '8888'

os.environ['http_proxy'] = f'http://{proxy_ip}:{proxy_port}'
os.environ['https_proxy'] = f'http://{proxy_ip}:{proxy_port}'
“`

Using crawlers and 4G proxy servers to get data
After the above preparations, we can start using crawlers and 4G proxy servers to get the data we need. Whether it is crawling web page data, grabbing API interface data, or performing automated operations, it can be easily realized. According to different needs, we can write corresponding crawler code, in combination with 4G proxy server configuration, to achieve efficient and stable data acquisition.

summarize
Using crawlers and 4G proxy servers on Android is not complicated, as long as you choose the applicable crawler tool and configure the proxy server, you can easily realize a variety of complex crawler tasks. I hope the above experience and insights will be helpful to you.