The update will make it easier for customers to make calls using Wi - Fi in situations where they don't have great cellular coverage in their homes. (androidcentral.com)
Tip: Check if your hospital has wifi... it might save him of boredom if your hospital is in a bad cellular coverage area! (momtricks.com)
Wouldn't it be nice to not have to worry about cellular coverage because your phone just works anywhere? (iphonehacks.com)