3 issues I am having [hoping for some help] wifi | Voice Type | Phone Lock | handwriting keyboard

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http://forums.androidcentral.com – 1- What is the correct way to set this phone up for wifi? Here is my dilemma: I signed into starbucks wifi used it for a bit then left got in my car to drive. It switched from wifi to 4g and then i drove more and was at a red light near another bucks and it picked up the wifi from my car but i was too far for it to work so i was stuck in a purgatory between a wifi connection i didnt want and getting a mobile data connection that i should of had. do i need to turn on and off wifi always? my last phone i never had to do that. 2- Is there a way to turn down the sensitivity of voice ty (HowTos)