DNS Leak on Android vs iPhone: Which One Leaks More? We Tested to Find Out the Truth

Many people are concerned about privacy issues, but often overlook a key point — DNS leaks on mobile phones, especially when using proxies or networking tools.

Especially when comparing DNS leaks on Android phones and iPhones, the difference is much bigger than expected.

So the question is: between Android DNS leaks and iPhone DNS leaks, which one is more serious? Let’s break it down in detail.

1. What is a DNS leak? Understand this first

DNS is the process of translating a website domain into an IP address. Normally, if you're using a proxy tool, this process should also be encrypted and routed through the proxy.

But when a DNS leak happens, it becomes:

👉 Your website traffic goes through the proxy

👉 But DNS requests go through your local network (like your ISP)

The result: your browsing activity may still be exposed, and your privacy is compromised.

2. How to perform a DNS leak test?

Before comparing, let’s first look at how to test it. It’s actually very simple:

1. Open your browser

2. Visit common DNS leak testing websites

3. Check the returned DNS server IP location

4. Use the ToDetect fingerprint tool to not only check DNS, but also detect browser fingerprints such as IP, WebRTC, Canvas, etc., all in one place.

3. Android vs iPhone DNS leak comparison

1. Android DNS leak situation

Test device: a typical Android phone + common proxy tools.

Analysis: Android gives more control over DNS. Apps can customize DNS, the system may prioritize local DNS, and some tools do not fully route DNS traffic — making leaks more common.

2. iPhone DNS leak situation

Test device: iPhone + system VPN configuration.

Analysis: iOS is more closed. DNS requests are easier for VPNs to fully control, and there’s less interference from apps, so DNS leaks are less frequent.

4. Is iPhone relatively safer?

Although results favor iPhone, actual safety depends on:

• Whether your proxy tool is reliable

• Whether DNS leak protection is enabled

• Network environment (WiFi / 4G / 5G)

• Whether WebRTC leaks exist

Especially in browser fingerprinting, even if DNS is safe:

• WebRTC may expose your real IP

• Timezone/language mismatch

• Abnormal fingerprint data can still identify you

5. How to prevent mobile DNS leaks?

1. Use tools with DNS leak protection

Choose tools that support DNS Leak Protection, private DNS, and DoH/DoT.

2. Android users should optimize settings

Manually configure private DNS (DoT) or use dedicated DNS apps. Avoid low-quality proxy tools.

3. iPhone users should still be cautious

Use reliable VPN protocols like IKEv2 or WireGuard. Avoid unknown configuration profiles.

4. Test regularly

Check after changing servers or tools:

• DNS consistency

• IP matching

• Any abnormal servers

Combine with ToDetect to also check:

• Browser fingerprint

• WebRTC leaks

• IP consistency

Summary: Which leaks more?

Android devices are more prone to DNS leaks and require manual optimization. iPhones perform better but are not completely risk-free.

Using tools like ToDetect helps check both DNS and IP security at once.

If you haven’t tested your phone yet, now is a good time — understand your risks and take action accordingly.