Download GoFlyVPN

Very little. You need a device running one of the supported systems, roughly thirty megabytes of free storage, and a working internet connection –a VPN routes an existing connection rather than replacing it. There is no account to create, no email address to confirm and no payment method to register, so nothing needs preparing in advance.

For most people it is two or three minutes end to end. Downloading the package is the slowest part on a weak connection. Installation itself is quick, the permission prompt takes one tap, and the first connection is usually established within a couple of seconds once you press the button.

Any app that keeps a network tunnel open uses some power, so expect a modest increase rather than none at all. In practice the difference is comparable to leaving a messaging app connected in the background. If battery life matters on a particular day, disconnect when you are not actively browsing and reconnect when you need the tunnel again.

Install the one that matches your device. If your Android phone is several years old and the current release will not run, use the legacy build instead –it is kept specifically for that hardware.

An operating system will not let an app route another app's traffic without explicit consent. That prompt is the consent step. Without it, the tunnel cannot be created and the app cannot protect anything.

Install it on each device you want protected. The tunnel runs on the device it is installed on, so a phone and a laptop each need their own copy.