I've been using Ipod Touches since 3rd gen on ios3. I've generally always just left wifi on all day and night. When ios7 introduced the Control Center, despite being able to quickly toggle wifi on my IpT5, I've gotten used to just leaving it on all the time. Does turning wifi off for half the day save that much battery (6 to 12 hours)? Also before going to bed (another 6 to 8 hours)? Better yet, can someone quantify these savings? I almost always never run low since I had a separate device for dumb/smart phone. My IpT5 is strictly a gaming device. But still like to see if someone has more technical details about this.