Yes that's right. there are only two options when it shows Learning usage patterns in battery 1. You did just Purchased your phone and you used the phone less than a week.
2. When you reset a phone then it'll take one more week to show you the estimated battery life.
in these two cases the phone will learn and monitor about what apps you're using more and how much each app is consuming battery life.
don't worry dude it's not an issue. you'll see the estimated time in a week for sure.!
