If you're tired of your phone being filled with pop-ups, banners, and videos that appear when you least expect them, you need an effective way to Block ads on Android without complicating your lifeThe good news is that you don't need root access, you don't need to pay for strange apps, and you don't need to go crazy with advanced settings.
For several versions now, Android has included a very powerful feature called Private DNS When properly configured, it can leave your phone virtually free of intrusive ads and many trackers. And best of all, this system It works in almost all applications and web browsing.not only within the browser.
What options are available for blocking ads on Android?
When you start researching how to get rid of ads on your mobile phone, you'll see there are several options. Each has its advantages and disadvantages, and they're all worth exploring. Explore all the options before choosing your favorite method..
Ad-blocking apps with VPN profile
One of the most popular ways to block ads on Android is to use applications that create a local VPN profile to filter traffic. This group includes well-known tools such as AdGuard, Blokada, AdAway, and RethinkDNS, many of which are available in alternative repositories or on their official websites.
These apps analyze the connections leaving your mobile phone and compare the requests with Lists of domains known for serving advertising or tracking usersIf they detect that an app or website is trying to connect to one of those domains, they simply block the request and the ad never loads.
The effectiveness is usually very high and, furthermore, It allows for a huge degree of customization.You can choose blocklists, create your own rules, allow specific domains, and so on. However, it's not all advantages, because this type of solution They continuously use the system's VPN function..
This means that, although they work well, they can consume more battery and resources that other, lighter methods don't. Furthermore, because they are always active, they prevent you from using a traditional VPN in parallel if you need one for privacy, work, or to bypass geo-restrictions.
Build your own blocker: Pi-hole and similar solutions
Another very popular approach among advanced users is to assemble a network-level ad blocker Using projects like Pi-hole on a Raspberry Pi or another low-power device. In this case, you don't directly access the mobile device, but rather the network it connects to.
The system works as follows: you configure your Raspberry Pi with Pi-hole and make it act as DNS server for your entire home networkAll devices connected to WiFi (mobile phones, tablets, computers, Smart TVs, etc.) ask that DNS for the IP addresses of the websites and servers they want to access.
Pi-hole uses lists of advertising and tracking domains to completely cut off requests to those servers. This blocks ads not only on Android, but on any device using that DNS. It's a very effective, virtually foolproof method, and also It gives you very comprehensive statistics in real time. which domains are queried, which ones are blocked, from which device, and at what time.
You can see, for example, how many requests your smart TV generates, which mobile apps trackers consult most often, or adjust filtering rules on the fly to be stricter or more permissive. However, all of this comes with fine print.
The main drawback is that It requires some investment of time, some money, and minimal technical knowledge.You need hardware like a Raspberry Pi, you have to install the operating system, configure it, open ports if you want to use it outside your home, etc. For users who are very concerned about privacy, it's fantastic, but for most, it might be more work than they're willing to take on.
Changing the DNS: the simple solution for most
Between apps with their own VPN and setting up your own local DNS server, there's an intermediate point that is usually the ideal option for most users: Change the DNS your Android uses to one that specializes in blocking ads and trackers.
There are mainly two ways to do it. One is the An easy, fast, and recommended way for almost everyone.using AdGuard DNS. The other is somewhat more complex but much more configurable, based on services like NextDNS.
The advantage of this approach is that you don't need to install apps, you don't need root access, and The impact on battery life is usually very lowbecause you only change the server that translates domain names, without keeping a VPN running constantly.
Configure a private DNS on Android to block ads
From Android 9 onwards, the system incorporates a feature called Private DNS This allows you to encrypt DNS queries and, in addition, choose a specific server simply by entering its hostname. This option is key to Block ads system-wide without installing anything.
Before continuing, keep in mind one important detail: if your mobile phone has an Android version earlier than 9This feature will not be available, and you will not be able to use the system's "Private DNS" mode. In that case, you will have to resort to other methods, such as blocking apps or router-level configurations.
General steps to change private DNS on Android
The exact path may vary slightly depending on the customization layer (Samsung, Xiaomi, Pixel, etc.), but in almost all cases the process for Configure a private DNS with ad filtering It follows a similar pattern to the following:
- Open the app Settings on your Android mobile.
- Enter the section Network and Internet or a similar name (Connections, Networks, etc.).
- Search and tap on the option Private DNSIf it doesn't appear at first glance, go to Advanced settings o More connection settings.
- In the pop-up window, select the option Private DNS provider hostname instead of Automatic or Off.
- Enter the DNS hostname you want to usewhich in this case will be one specialized in block ads.
- Save the changes and wait a few seconds for Android to validate the server.
If the name is spelled correctly and the service is operational, The system will immediately begin using that DNS. for all connections. If there is an error, you will see a warning or a message indicating that private DNS cannot be activated.
Use AdGuard DNS to block ads without installing apps
One of the simplest and most effective options is to resort to AdGuard DNSA free, public service offered by the developers of AdGuard, well-known in the ad-blocking world. The advantage of its DNS is that it comes pre-configured with lists of trackers, advertising domains, and potentially malicious content.
In practice, all you have to do is Tell Android to use AdGuard's DNS server as a private DNS. From that moment on, whenever an app or website tries to load an ad from a known domain, the server will refuse to resolve it and the ad will not be displayed.
Standard AdGuard DNS Hostname
Once you are in the private DNS menu and have selected the option to Private DNS provider hostnameEnter this exact value as the primary AdGuard server:
- dns.adguard-dns.com
It's important to write it without spaces, without quotation marks, and respecting the periods. If you enter it correctly, your phone will start using this DNS, which It will block most ads and many trackers. both in web browsing and in compatible apps.
AdGuard's "Family" profile to also block adult content
AdGuard also offers a "family" mode designed for those who want Filter not only ads and trackers, but also adult content websitesThis is very useful if the mobile phone is used by a minor or you want to add a little extra control without getting bogged down with parental control apps.
In this case, in the hostname field From your private DNS you should write:
- family.dns.adguard.com
With this configuration, the DNS server will continue to block advertising and tracking, and also It will block access to many adult websitesIt's not a 100% foolproof system, but it is a fairly convenient additional layer of protection.
Other blocking DNS options: NextDNS, ControlD, and others
If you're interested in going a step further and having almost surgical control over what gets blocked and what doesn't, you can opt for services like NextDNS or ControlD. These DNS servers work similarly to AdGuard, but offer comprehensive web panels to personalize your profile.
In the case of NextDNS, the process begins by creating a free account on their website. Once logged in, you can choose which blocklists to activate, which content categories to filter (gaming, social media, advertising, tracking, etc.) and even specifically block trackers from large companies like Amazon, Apple or Google.
The service also gives you access to very detailed statistics, where you will see real-time information on which domains are being queried and which have been blockedIt's quite revealing to see how many requests some apps make to tracking servers even when you're barely using them.
To use NextDNS as your private DNS on Android, on your profile settings page you need to locate the section for "DNS over TLS/QUIC"Copy the hostname provided by NextDNS (it will be something like a unique subdomain for your account) and paste it into the field of Private DNS provider hostname on Android.
You should be aware that NextDNS offers a free plan. It is usually limited to about 300.000 DNS queries per monthIn typical tests, this number is usually more than enough for a single device, but if you connect many devices to the same profile or are a heavy user, you may need to consider a paid plan or reduce the number of connected devices.
Services like ControlD offer a similar approach: DNS with preconfigured or customizable filters For ads, malware, trackers, and adult content. The general usage procedure is the same: you choose the desired profile on their website and copy the hostname or URL for secure DNS they provide, then enter it into the private DNS section of Android or in the browser.
Configure DNS with ad blocking only in the browser
If what worries you most is block ads while browsing the internet And not so much in apps, you can also configure a filtered DNS directly in your browser, without touching the system-wide settings.
In Google Chrome for Android, for example, there is an option called "Use secure DNS" This allows you to specify a particular provider that supports DNS over HTTPS. In this way, Chrome sends encrypted DNS requests to that server, which then applies its ad and tracker filters.
To set up an ad-blocking DNS in Chrome, the steps are similar to the following:
- Opens Google Chrome on your Android mobile.
- Access the menu and enter Configuration.
- Go to section Privacy & Security.
- Look for the option Use secure DNS and activate it.
- Choose Choose another provider or a similar option.
- Enter the URL of the ad-blocking DNS server that supports DNS over HTTPS.
In the case of AdGuard DNS, Chrome requires you to enter the address in a specific format for DNS over HTTPS, for example:
- https://dns.adguard-dns.com/dns-query
This URL tells Chrome to send encrypted DNS queries to AdGuard's servers. This will allow the browser to apply the same set of ad filters and trackers than if you were using AdGuard DNS as the system's private DNS.
It's important to note that if you configure a blocking DNS within Chrome and have also configured one at the Android level, The browser's DNS takes priority while you are using it.In other words, what you define in Chrome takes precedence over what you have defined in the general system settings.
How does ad blocking via DNS actually work?
To understand why simply changing your DNS can make many ads disappear, we need to take a very brief look. How do those ads load on your mobile?Every time an app or website wants to display advertising, it makes requests to specific ad servers.
These ad servers function, essentially, like any other online resource: they have domain names that the system needs to translate to an IP address in order to connect. That's where the DNS (Domain Name System) comes into play.
The DNS acts as a kind of "address book" that translates easy-to-remember names (for example, www.google.es) in numerical IP addresses. Every time your mobile phone needs to access a domain, it sends a query to the DNS server to get the corresponding IP address back.
DNS servers specializing in ad blocking take advantage of precisely that middle ground: They carry lists with thousands of domains known for serving advertising and tracking.When your mobile phone tries to resolve one of those domains, the DNS may refuse to respond, return a false address, or display a warning page.
In this way, the request from the app or website never actually reaches the ad server, so Banners, videos, or promotional elements are not downloaded or displayed.The practical result is that, in many cases, you'll see empty spaces where there used to be ads, or simply a cleaner page design.
This method has one great advantage: Act before the advertising content even reaches your deviceThis translates to data savings, reduced resource consumption, and faster, smoother browsing. The downside is that not all ads are served from easily blockable domains, and some are more deeply integrated into apps, so some residual advertising may remain.
Block ads by disconnecting from the internet: airplane mode
There is a very basic trick, but one that can be useful in some contexts: using the Airplane mode to prevent ads from being downloadedObviously, this method doesn't work for everything, but it can get you out of a tight spot in certain games or apps.
The idea is simple. Many applications, especially simple games, work perfectly well without an internet connection because All playable content is already installed on the deviceHowever, the ads they display do depend on connecting to external servers.
If you activate airplane mode before opening that game or app, the device cuts off the data and Wi-Fi connection, so The requests to the ad servers are not completedThe result is that you can still play or use the app, but the ad blocks don't load because there's no connection.
It's a very limited method: it won't work for games that require a constant connection, cloud-based applications, or, of course, for browsing the internet, because without data or Wi-Fi there's no network access. But for those quick sessions in offline games that bombard you with ads, It can be a quick solution without needing to install anything.
Considerations, limits, and realistic expectations
While changing your DNS and using services like AdGuard DNS, NextDNS, or similar can drastically reduce the ads you see, it's important to understand that No locking system is perfectThere will always be isolated cases where an advertisement slips through.
Some applications, for example, They integrate advertising very closely with their own serverswithout resorting to easily identifiable external domains. In such cases, a DNS has no way of distinguishing which requests correspond to app content and which are advertisements, making blocking much more difficult.
It can also happen that certain apps or websites They will stop working properly if their advertising is blocked too aggressively.Some services rely on scripts or resources hosted on the same domains as the ads, and if the DNS cuts off those connections, you might encounter sections that don't load or limited functionality.
On the other hand, remember that DNS-level blocking is applied to the entire device If you configure it through your Android settings, any app using the connection, including your most important ones, will be filtered. If you notice unusual behavior, you might need to change your DNS server, lower the blocking level, or try a different provider.
In practice, setting up a private DNS with ad filtering on Android offers a very interesting balance between simplicity, efficiency and resource consumptionWithout installing anything, without rooting, and with a couple of adjustments, your mobile phone can become a much cleaner visual environment and a little more respectful of your privacy.
By combining the use of private DNS servers like AdGuard or NextDNS, secure DNS options in browsers like Chrome, and specific tricks like airplane mode for offline gaming, it's possible to make Android a secure environment. with less advertising noisewith greater control over trackers and, in general, a much more comfortable experience without the need to resort to complicated or invasive solutions. Share the information so that more users can learn about the topic.