My experience is the exact opposite, having to "scrounge" to even get close to a week with Android under similar usage. I have less control with Android over what gets to run in the background and how network access is permitted, and most importantly no control at all over any of the invasive behavior of Android itself where it uninhibitedly abuses cellular/WiFi access to shovel data to Google the entire time the phone has network access. It's a world of difference compared to how very rarely iOS "phones home". Regardless, I get a week of regular use out of this anno 2018 iPhone model. If I keep it going as just a phone and enable low-power mode, I get a few days more.