When you surf the Internet, your IP address, which acts as a unique identifier, is visible. When scraping, the website knows your IP, and it may block it. A proxy basically sits between your real IP and the server of the targeted page to hide your online footprint.
Due to its speed, a web scraper is likely to raise some red flags and face measures such as rate-limiting. With this procedure, websites aim at reducing the number of requests a device can make within a set time. However, by using proxies and constantly changing them, you can avoid the particular limit and optimize the scraping process.
Mobile proxies use cell tower IPs that service mobile devices such as smartphones and tablets with the connection. Because they have to provide Internet on the go, they constantly swap IP addresses between users. This is what makes mobile IP addresses so effective for web scraping.
When it comes to speed, there are two main types of mobile proxies: 3G and 4G. These are based on the technologies with the same name, with the latter being faster than the former.
Some mobile proxies are devices themselves, such as modems. Once connected to them, you browse via the IP address provided by the modem or other mobile Wi-Fi device. These IPs can also be stored on dedicated SIM cards to provide better security and privacy.
When using other types of proxies, such as datacenter or residential, you should set automatic rotations between them, which ensures better results and more privacy. But, with mobile proxies, you are constantly assigned a new address from the ISP. So, basically, mobile proxies come with their own proxy rotation schedule. However, it’s a good idea to use rotation for mobile proxies because it gives you more control over the requests and the scraping process in general.
Additionally, mobile proxies are more trustworthy. Think about it for a second. Nowadays, mobile traffic is essential for a website’s success, which makes web administrators less likely to block IPs that come from mobile devices. Also, because most cell towers cover large areas, web administrators are less eager to stop mobile IPs. Blocking hundreds of potential visitors because of some suspicious activity is simply something they are not willing to risk.