Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
Yes LTE is 4G... The article says 60Mbps which is alot faster then most people's Cable or DSL Connections which are between 5 - 15Mbps.... so yes it is faster then WiFi which is 54Mbps (802.11g). Don't forget with WiFi you are still limited by your ISP's internet connection speed to your home which is still 5 - 15Mbps.