iOS 15 makes phone battery drain fast.
I installed iOS 15 on my phone yesterday and my phone's battery has been draining fast since then. It's been over 24 hours and it hasn't gone away. It drains faster on Safari and Snapchat. I use an iPhone 6s which supports iOS 15. I can't remember if i plugged my phone in or not for the update, would not charging it during the update be an issue? Please help.