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# DNS Settings on Android & iPhone: Block Ads in 5 Minutes
- URL: https://howtohub.org/block-mobile-ads-adguard-dns/
- Published: 2026-10-31T20:10:56.000Z
- Updated: 2026-11-01T20:26:59.000Z
- Description: Block ads in every app — not just the browser — by pointing your phone's DNS at AdGuard. Free, no root, no app: exact addresses and tap-by-tap steps for Android and iOS.
- Author: Md Kamrul Islam
- Tags: Mobile, Security, Privacy, Android, iOS, Tutorials, #slider

\[tldr\] **Quick Solution:** You don't need heavy ad-blocker apps or root access. Set your phone's Private DNS to `dns.adguard-dns.com`. It blocks ads, tracking scripts, and pop-ups across all apps and games at the network level. Takes 60 seconds and uses 0% extra battery. \[/tldr\] \[howto\_callout type="tip"\] **Bookmark this guide (🔖):** Tap the *Bookmark* button at the top right of this page. You will want this exact hostname handy whenever you get a new device or reset network settings. \[/howto\_callout\]

## Why DNS Ad Blocking Beats Ad-Blocker Apps

Traditional ad blocker apps run a continuous background VPN service that consumes RAM, drains battery, and slows your device. Private DNS (DNS-over-TLS) is built directly into Android and iOS:

- **System-wide coverage:** Blocks ads inside free games, utility apps, and web browsers.
- **Zero battery impact:** Handled natively by the operating system kernel.
- **Works on Wi-Fi and Mobile Data:** Your protection stays active wherever you go.

## Android Setup: 4 Taps, No App Needed

\[howto\_step number="1" title="Open Network Settings"\] Open your phone's **Settings** app and tap **Network & internet** (on Samsung Galaxy devices, tap **Connections** ➔ **More connection settings**). \[/howto\_step\] \[howto\_step number="2" title="Locate Private DNS"\] Tap **Advanced** and select **Private DNS**. If your manufacturer hid it, simply search for *Private DNS* in the Settings search bar. \[/howto\_step\] \[howto\_step number="3" title="Enter the Ad-Blocking Hostname"\] Select **Private DNS provider hostname** and type or paste exactly:

```bash
dns.adguard-dns.com
```

*Note: Do not put `https://` or spaces before or after the hostname.* \[/howto\_step\] \[howto\_step number="4" title="Save and Confirm"\] Tap **Save**. The setting applies instantly. Open any ad-heavy app or website to confirm banners and video pop-ups are gone! \[/howto\_step\]

## iPhone & iPad Setup: Configuration Profile

\[howto\_step number="1" title="Download the Official Profile"\] Open Safari on your iPhone or iPad and go to [AdGuard Public DNS](https://adguard-dns.io/en/public-dns.html?ref=howtohub.org). Under iOS, select **Default server** and tap **Download configuration profile**. \[/howto\_step\] \[howto\_step number="2" title="Allow and Install Profile"\] Tap **Allow** on the prompt. Next, go to **Settings** ➔ **Profile Downloaded** (or **General** ➔ **VPN & Device Management**), tap **AdGuard DNS**, and hit **Install**. Enter your passcode to confirm. \[/howto\_step\] \[howto\_step number="3" title="Toggle On or Off Anytime"\] The profile now sits inside **Settings** ➔ **General** ➔ **VPN & Device Management** ➔ **DNS**. You can switch between Automatic and AdGuard DNS in one second whenever needed. \[/howto\_step\]

## Alternative DNS Providers at a Glance

AdGuard isn't the only option. Depending on your primary goal, pick the hostname that matches your needs:

| Provider               | Hostname to Copy       | Primary Benefit                                         |
| ---------------------- | ---------------------- | ------------------------------------------------------- |
| **AdGuard (Default)**  | dns.adguard-dns.com    | Stops ads, trackers, and popup scripts                  |
| **AdGuard Family**     | family.adguard-dns.com | Blocks ads + adult content + enforces SafeSearch        |
| **Cloudflare 1.1.1.1** | one.one.one.one        | Maximum raw browsing speed and privacy (no ad blocking) |
| **Quad9 Security**     | dns.quad9.net          | Blocks phishing, malware, and malicious domains         |

For an in-depth speed and security benchmark between these resolvers, read our complete [DNS Comparison Guide](https://howtohub.org/best-dns-server-android-iphone/).

\[howto\_callout type="warning"\] **Important Limitations:**

- **YouTube Video Ads:** DNS filters cannot block ads played directly within the official YouTube app because YouTube streams ads from the exact same media servers as the videos. Use a browser extension or YouTube Premium for video ads.
- **Public Wi-Fi Portals:** Hotel or airport login pages occasionally block encrypted DNS. Simply set Private DNS to **Automatic** while logging in, then switch back.

\[/howto\_callout\]

## Frequently Asked Questions

\[howto\_faq question="Will this DNS slow down my internet connection?"\] No. In fact, pages often load faster because your phone never downloads megabytes of bloated ad scripts, tracker pixels, and video banners. \[/howto\_faq\] \[howto\_faq question="Does this work on mobile data (4G/5G)?"\] Yes. Because Private DNS is configured in the Android and iOS system settings, it stays active whether you are connected to home Wi-Fi, office networks, or mobile cellular data. \[/howto\_faq\] \[howto\_faq question="How do I completely undo this setting?"\] On Android, go back to Settings ➔ Private DNS and select **Automatic**. On iPhone, go to Settings ➔ VPN & Device Management and delete the profile. Your device immediately returns to factory defaults. \[/howto\_faq\]