;WiFi standards have evolved over the years to deliver faster wireless internet speeds and the increased broadcast range on wireless routers. WiFi first hit the mainstream using the 802.11b standard, then evolved to 802.11g, then 802.11n, and eventually on to the current standard, 802.11ac. (Each standard is always backward-compatible with prior standards.) For the fastest WiFi available, buy an Android tablet with 802.11ac WiFi, and avoid buying one that uses an older, slower version of WiFi.