I use a tablet for any safe wifi and pictures or vids any. i have learned over time if u able to leave it in airplane mode then it dont drain ur battery as fast. not sure how many know that if at all. and wifi, i have apps but they always warn to make sure the wifi is safe so i have chance to think twice before using if any free at all. but with so many cells roaming around in guessing it can be a pain traffic wise cause u never know what everyone try do at time and can clog up wifi im guessing.