How to Set Up Proton VPN on iPhone

Once you're connected, Proton VPN runs two more safeguards automatically — there's nothing to set up. It's just worth knowing what they do.

NetShield filters your connection at the DNS level, stopping known malware domains, adverts and trackers before they load. On a paid plan it's on by default — blocking malware, ads and trackers — and you can change the level or switch it off under Settings → NetShield. On the kind of network this guide is about, it strips away the tracking layer that would otherwise ride along with your traffic.

Always-on VPN is enabled by default. Whenever the tunnel drops — switching between Wi-Fi and mobile data, waking your iPhone from sleep, a brief loss of signal — it quietly re-establishes the encrypted connection on its own, so you don't have to remember to reconnect — you stay protected without thinking about it.

The kill switch is a separate feature, and it's switched off by default. Always-on VPN reconnects you automatically if the tunnel drops, but for the brief moment it takes to re-establish, traffic could slip onto the network unprotected. The kill switch closes that gap: it blocks all internet access until the encrypted tunnel is back, so nothing ever leaves your iPhone in the clear. You'll find it under Settings → Kill Switch. It's worth turning on if you're often on untrusted Wi-Fi or moving between networks — the trade-off is that your connection cuts out for a second or two rather than quietly falling back to an unprotected one.

A VPN runs quietly in the background, but there are a few normal side effects worth recognising so they don't catch you out.

A handful of websites, streaming services and banking apps detect and block VPN traffic, so now and then you might hit a CAPTCHA, an ‘unusual activity’ warning, or a page that simply won't load. That's the site's choice, not a fault with Proton VPN. If it happens, try switching to a different server — or one in your own country — or briefly disconnect for that single site. Banking apps in particular often prefer your normal connection.

Switching between Wi-Fi and mobile data, weak signal, or your iPhone waking from sleep can briefly interrupt the tunnel. Always-on VPN reconnects on its own, so most drops are over in a second or two. If you turned the kill switch on, your internet will pause for that moment rather than fall back unprotected — that's it working as intended.

Because your traffic now takes an encrypted detour through a VPN server, you may notice a small drop in speed — usually unnoticeable for browsing and messaging, occasionally visible on large downloads or video. Choosing a nearby server (the Fastest option, or one in your own country) keeps the difference to a minimum, and switching servers often helps if a connection feels sluggish.

Once in a while a single piece of a page — an image, a video, an embedded widget — won't load while the rest of the site works fine. Usually that element is served from an ad or tracking domain that NetShield is blocking, so it's a side effect of the ad-blocking, not a broken VPN. If you genuinely need it, drop NetShield to ‘Block malware only’ (or turn it off) under Settings → NetShield and it will come through.

Links that bounce you through a tracking or ad redirect before reaching their destination — sponsored search results and Google Ads links are the usual culprits — can fail with a DNS or ‘server not found’ error, because NetShield blocks the redirect domain so the hop never completes. Copy or type the real destination address directly, or briefly switch NetShield off, and the page opens normally.

A VPN closes the network door, but it isn't the only way back in. The account your iPhone runs on — your Apple ID — is the master key to your photos, messages, backups and location. If someone has its password, or can reach the email it's tied to, they can walk straight back in and the VPN won't stop them. That account is what to lock down next.

The biggest part of that is the email behind the account. A free inbox that has already been breached — or is easy to guess — quietly undoes everything else, so it's worth moving your most important account onto a private, end-to-end encrypted address. Here is why Proton Mail makes a stronger foundation.