I've had the note 20 ultra about a year, and suddenly this week the battery drain is crazy. Doing the same apps and basic usage as previously, it's gone from about 40% remaining at the end of the day, to dropping down to about 20% before noon, again by 5pm, and again before bed. I've even turned on battery saver, with minimal change. My battery has dropped 5% in the couple of minutes to add this post. In a week I've gone from loving this phone, to wanting to lose it to claim the insurance. Is anyone aware of any apps or updates that have occurred in the last couple of weeks that might cause this?