When you visit a website on your iPhone, your device needs to translate the website's name into a numerical address. That translation happens through the Domain Name System (DNS), and by default, this process is entirely unencrypted. The implication is stark: anyone on your network, as well as your service provider, is able to see what sites you are visiting and potentially even sell this data to third parties.
For most Australian iPhone users, this vulnerability goes unnoticed. The browsing site you visit, the banking portal you access, the medical information you search for—all of it is visible in plaintext to whoever controls the network infrastructure. If you are connected to a public Wi-Fi network, somebody with the right know-how could intercept your search queries and know what you're searching for and the sites you're visiting. The risk isn't theoretical.
The good news is that Apple has supported encrypted DNS since iOS 14, yet the vast majority of iPhone owners remain unaware of the feature. Encrypted DNS uses encryption to protect your DNS questions and answers, and if you don't trust the network you're on, it can also involve sending your questions to a DNS server that you do trust. Two protocols enable this: DNS over TLS (DoT) and DNS over HTTPS (DoH), both of which use TLS to encrypt DNS messages.
The risks of remaining unencrypted extend beyond privacy. Malicious hackers could reroute your DNS traffic, for example sending you to a clone of your bank's website when you think you are accessing the real thing. Private DNS protection acts as a guard against this kind of man-in-the-middle attack, particularly on untrusted networks like airport or cafe Wi-Fi.
How to enable private DNS
Apple offers two practical methods to activate encrypted DNS on your iPhone. The most flexible approach uses configuration profiles. You download a .mobileconfig file in Safari, then go to iPhone settings, General, and VPN & Device Management, tap the profile name and install it after entering your iPhone passcode. This approach works across all Wi-Fi and cellular networks simultaneously, avoiding the need to reconfigure settings for each network separately.
The alternative is to use a dedicated DNS app. Using a secure DNS app is the easiest way to get encrypted DNS on an iPhone, particularly for users uncomfortable with manual configuration. However, this method has a limitation: if you are already using a VPN app such as Private Internet Access, ProtonVPN or NordVPN, this approach is not an option.
Choosing a DNS provider
Several trusted providers offer encrypted DNS services. Cloudflare, NextDNS, Quad9, AdGuard DNS, CleanBrowsing, and Google Cloud DNS are among the best private DNS options on iPhone. Each offers slightly different features depending on your needs.
Cloudflare's 1.1.1.1 is popular for speed and simplicity. AdGuard DNS maintains blocklists including phishing domains, known malware hosts, and scam infrastructure; when your iPhone attempts to connect to one of these domains, the request is blocked before any data is exchanged, providing an extra layer of protection that works across all apps. Google's service and Quad9 similarly offer malware protection built into their DNS infrastructure.
The critical distinction between DNS protection and other privacy tools matters. DNS hides your browsing data, blocks unsafe sites before they load, and can be more private and faster than your ISP's default DNS. A virtual private network (VPN), by contrast, encrypts all traffic, but doesn't necessarily block ads or malware at the DNS level. Many privacy-conscious users deploy both, layering defences.
Understanding the limits
Private DNS is not a complete privacy solution. For users who want stronger anonymity guarantees, AdGuard DNS should be viewed as a baseline privacy improvement rather than a replacement for tools like VPNs or private browsing practices. A determined observer can still determine which websites you visit by examining your IP address traffic patterns, even if they cannot see the DNS queries themselves.
Some networks also resist encrypted DNS. Public Wi-Fi networks, particularly in workplaces or schools, may deliberately block encrypted DNS traffic to enforce content policies or parental controls. When this occurs, your iPhone will fall back on unencrypted DNS traffic, which may be monitored by other devices on the same network. In these situations, you may see a privacy warning on your Wi-Fi settings, alerting you that encrypted DNS is unavailable.
The decision to enable private DNS on your iPhone involves a straightforward trade-off: a few minutes of initial setup in exchange for substantially reduced visibility of your browsing habits to network operators and service providers. For Australian users concerned about privacy on public networks or skeptical of ISP data practices, the configuration is worth undertaking. For those on trusted home networks, the benefit may be marginal but comes at no practical cost.
Apple's native support means you need not install additional apps or trust third-party VPN providers with all your traffic. The encrypted DNS feature sits at the network layer, operating silently in the background. If privacy matters to you—and it should, given the commercial value of browsing data—activating it is one of the simplest protective steps available to iPhone users.