Best practices for using a VPN
A VPN changes who can see your traffic, your ISP or the cafe Wi-Fi stops, and the VPN company starts.
Whether that's a good trade depends on which company you pick and how you set it up, so most of the tips below are about those two things. I'm deliberately not naming providers.
Work out what you want it for. Hiding your IP from a site, avoiding snooping on public Wi-Fi, and getting around a geo-block are different jobs. A VPN won't make you anonymous or secure plain HTTP traffic (Privacy Guides says the same), and on public Wi-Fi it adds less than it used to, since nearly all web traffic is HTTPS now. For anonymity, use Tor.
Skip the free apps. Servers cost money, so something else is paying for them. A study presented at NDSS 2026 tested 281 free Android VPN apps: 246 contacted known ad or tracking servers, 61 sent some data unencrypted, and 29 leaked browser or DNS traffic outside the tunnel. It excluded services that need an account, so judge free tiers from paid providers by the checklist below.
Look for an independent audit of the no-logs claim, ideally recent and repeated. A privacy policy is a promise; an audit is someone else checking it at one point in time, so check the date. Plain config files for the standard WireGuard app are a good sign too, since you aren't stuck with the provider's client.
Use WireGuard if the app offers it. OpenVPN is also fine. Avoid PPTP, which has been broken for years.
Turn on the kill switch and test it. It blocks traffic if the tunnel drops, which otherwise leaves you on your normal connection with no warning. On Android, also enable Always-on VPN and Block connections without VPN in system settings. Then check your IP, run DNS and WebRTC leak tests, and see what happens when the connection drops.
A VPN only changes your IP address. If you're logged into Google or Facebook they know who you are anyway, and cookies and browser fingerprinting are untouched.
Be careful with "best VPN" lists. Many are affiliate marketing, and a 2022 University of Michigan study found that users trust review sites the providers it interviewed described as mostly motivated by money. Privacy Guides' VPN page carries no sponsors or ads, so it's a reasonable place to cross-check.
Audits only cover one moment in time, so I'm curious how much weight people here give them compared with a provider's track record.
A VPN shifts who can see your traffic. Pick one with a recent independent audit, skip free apps, use WireGuard, turn on the kill switch, test for leaks, and don't expect anonymity.