WiFi Is Great - Until It's Not

Android 101: How to 'forget' a Wifi network | Android Central. Phones and tablets eat data. As unlimited data plans pass into history, it is important that we connect to available protected WiFi when we can. Never connect to public WiFi without using a secure VPN, Other than that, it is nice to automatically connect to home and office WiFi whenever you get there. However, the phones and tablets are always seeking WiFi signals unless you turn them off, and that can use a lot of data when free WiFi is available. So, avoid battery loss and excessive data use by "forgetting" certain networks. This post tells you how.