Instruct: Classify the given Amazon review into its appropriate rating category
Query: Easy to install

Easy to install. I ran the phone down to 30% and used this to recharge. Did so in about 4hrs. Ran the phone down again and plugged it in with this battery case installed. Took another 4hrs to charge phone and an additional 4hrs to charge battery case. It would have been faster to remove phone and charge each separately. But, I don't want to do that every night. The side buttons are horrible. Very hard to get them to work. I have tried re-installing several times and manipulating them with it installed. Still do not work well. Especially the power button used to shut screen off. Very hard to make this work. The best feature is the cut out for the rear camera. Very wide and open. Bought another battery case. Added this one to my junk drawer