Very easy to use. At beginning it feels a bit bulky but you’ll get used with it in few days. The battery life is amazing as you have 3-4 full charges. Since I got this battery case I’m not worried about my phones battery life anymore. It will give you a fool 24h battery life no matter how much you use your phone during the day. Sometimes I charge it once at two day, because now not being stressed anymore about it, sometimes I forget to connect it to charge when I go to sleep. I don’t understand how much freedom this battery case will give you until you will try it, is amazing