Turn off automatic Wi-Fi connection on your smartphone device

Most smartphones have features that save on cellular data usage. For example, phones can automatically detect previously used Wi-Fi networks and connect to them when within range. Although you may save on data, you also risk compromising your device’s security. Public networks are less secure, therefore they are more susceptible to attacks. Prevent this issue by turning off this capability.

Here’s how to do it on an iPhone:

  1. Open the Settings app.
  2. Press Wi-Fi.
  3. Select the network.
  4. Choose Auto-join Off.

Here’s how to do it on an Android:

  • Open the Settings app.
  • Press Network & internet.
  • Select the Wi-Fi preferences option.
  • Toggle off Connect to open network.