iphone 13 pro loses charge overnight
I usually put my phone on charge overnight when it's below 50%. In the past couple of weeks it's been about 65% when I go to bed but when I get up it's completely dead. Any ideas why? I have updated all apps and software, closed all apps, and don't leave it on for music or anything at all for that matter.
Thanks in advance for any answers.
iPhone 13 Pro Max