Your Guide to Changing DNS Settings on Mobile Devices

Understanding DNS and Why You Might Want to Change It

DNS stands for Domain Name System. Think of it like a phone directory for the internet. When you type a web address like "www.example.com" into your browser, your device needs to know where that website actually lives on the internet. DNS servers translate those website names into numerical addresses called IP addresses that computers understand. Your mobile device is constantly using DNS servers to find websites, send emails, and use apps.

By default, your mobile device uses DNS servers provided by your internet service provider or mobile carrier. These servers work fine for most people, but there are reasons you might consider changing to different DNS servers. Some people change their DNS settings to use public DNS services that may offer faster performance or different filtering options. Others might want to use DNS services that block certain types of content or provide additional privacy features.

Understanding DNS helps you make informed decisions about your internet connection. DNS servers operate in the background without most users noticing, but they play an important role in how quickly websites load and how your device connects to online services. When you change DNS settings, you're choosing different servers to handle these translations between website names and their actual addresses.

Some common DNS services you might encounter include Google Public DNS, Cloudflare DNS, and OpenDNS. Each service operates differently and may have different features. Before making any changes, it helps to understand what DNS does and which service might match what you're looking for.

Practical Takeaway: DNS servers translate website addresses into numbers your device can understand. Changing your DNS settings lets you choose which servers handle this translation, but the basic function remains the same regardless of which service you select.

How to Change DNS Settings on iPhone and iPad

Changing DNS settings on Apple devices involves accessing your Wi-Fi network settings and modifying the DNS configuration for the specific network you're connected to. This process differs from Android devices and requires several steps through the Settings app.

To change DNS on an iPhone or iPad, start by opening the Settings app and selecting Wi-Fi. Find the network you're currently connected to or want to modify. Next to the network name, you'll see an information icon (usually a circle with the letter "i" inside). Tap this icon to open the network settings. Scroll down until you see the DNS option. By default, it may show "Automatic" or the current DNS server addresses.

Tap on the DNS field. You'll see an option to configure DNS. Select "Manual" to enter your own DNS server addresses. You can now add the DNS server addresses you want to use. Most DNS services provide two addresses: a primary and secondary DNS server. Enter these addresses in the provided fields. For example, if you were using a public DNS service, you would enter the primary address in the first field and the secondary address in the second field.

After entering your DNS addresses, tap the back arrow or "Save" button to confirm your changes. Your device will now use the new DNS servers when connecting to that specific Wi-Fi network. If you connect to other Wi-Fi networks, they may continue using their previous DNS settings unless you modify them separately.

It's important to note that these changes only affect Wi-Fi connections. When you use cellular data on an iPhone or iPad, your device uses the DNS servers provided by your mobile carrier, and you cannot change these settings. The DNS configuration you set only applies to the specific Wi-Fi network you're modifying.

Practical Takeaway: On iPhones and iPads, change DNS settings by going to Settings, selecting Wi-Fi, tapping the information icon next to your network, selecting Manual DNS, and entering your chosen DNS server addresses.

How to Change DNS Settings on Android Devices

Android devices offer more flexibility for changing DNS settings compared to iPhones, though the process varies depending on your device manufacturer and Android version. Some Android devices allow you to change DNS settings directly, while others may require you to use a different method.

For most Android devices, open the Settings app and navigate to Network and Internet or Connections (the exact name varies by manufacturer). Look for Wi-Fi settings. Find the network you're connected to and hold or long-press on it to open a menu of options. Look for options like "Modify," "Edit," or "Manage Network Settings." This will open the network configuration screen.

Look for "IP Settings" or "Advanced Options" and change this from "DHCP" to "Static" if it's not already set to static. This allows you to manually enter DNS settings. Below this, you should find fields for DNS 1 and DNS 2. Enter your primary DNS server address in the DNS 1 field and your secondary DNS server address in the DNS 2 field. Save these changes.

Some newer Android devices have simplified this process. If you don't see the option to manually set DNS on your Wi-Fi network settings, check if your device manufacturer has included a built-in option under Settings > System > About > Advanced or Settings > Developer Options. Some manufacturers like Samsung have their own DNS configuration tools.

Another method available on many Android devices involves using a private DNS feature, which is a more streamlined way to change DNS settings. Go to Settings > Network and Internet > Advanced > Private DNS and enter your DNS server address. This method is simpler because you only need to enter one address, and your device handles the rest automatically.

Similar to iPhones, DNS changes on Android typically only affect Wi-Fi connections. Cellular data connections use your carrier's DNS servers. However, if your Android device has a private DNS option, this may apply to both Wi-Fi and cellular connections.

Practical Takeaway: On Android devices, change DNS by going to Settings, finding your Wi-Fi network, accessing network settings, changing IP settings to Static, and entering your DNS server addresses in the DNS 1 and DNS 2 fields. Alternatively, use the Private DNS feature if your device offers it.

Common DNS Services and Their Characteristics

Several DNS services are publicly available, each with different features and characteristics. Understanding what each service offers can help you decide whether changing your DNS settings makes sense for your situation.

Google Public DNS is one of the most widely used public DNS services. It uses the addresses 8.8.8.8 and 8.8.4.4. Google designed this service to be fast and reliable. Many users choose Google Public DNS because it's maintained by a major technology company and has been operating for many years. This service does not filter content, so all websites remain accessible.

Cloudflare DNS uses the addresses 1.1.1.1 and 1.0.0.1. Cloudflare markets their service as fast and privacy-focused. They offer a free version and a version called 1.1.1.1 for Families that includes content filtering. This filtered version blocks access to malware and adult content. Cloudflare publishes a privacy policy stating they don't sell user data and delete DNS query logs regularly.

OpenDNS provides DNS services at 208.67.222.222 and 208.67.220.220. OpenDNS is known for offering content filtering options. Their free service includes basic filtering, and they offer paid services with more detailed controls. Many families use OpenDNS because it allows parents to filter categories of content.

Quad9 operates at 9.9.9.9 and 149.112.112.112. This service focuses on security and blocks known malicious websites automatically. Quad9 is backed by a nonprofit organization and emphasizes privacy protection.

Your internet service provider or mobile carrier provides default DNS servers, typically at no additional cost. These work adequately for most users and don't require configuration changes.

Practical Takeaway: Different DNS services have different goals—some emphasize speed, some offer content filtering, and some focus on security. Research what each service provides before changing your settings to make sure it aligns with your needs.

Troubleshooting Issues After Changing DNS Settings

After changing your DNS settings, you should test whether your mobile device is working properly. In some cases, incorrect DNS addresses or configuration problems can cause issues connecting to websites or using online services.

The most common issue is entering incorrect DNS addresses. Double-check that you've typed the server addresses correctly. DNS addresses are long numbers separated by periods, and even a single incorrect digit will prevent the service from working. Refer to the official documentation from