iPhone 13 pro battery draining
Hi,
I have an iPhone 13 Pro which is a about 18 months old and the battery seems to be draining really quickly. I usually charge overnight to 100% and by lunchtime the battery is down to 30-40% and yet I've only used it for a total of about an hour (if that!). The battery health is a 87% (which I'm told is good). I've tried looking online and tried all the suggested solutions (re-starting the phone, lowering the brightness, turning off app refresh, closing the all the apps and safari windows etc) and yet nothing seems to work. I generally use only a handful of apps (Tiktok, Candy Crush, Safari, mail, music are the main ones). Just opening my phone and being on the home screen seems to drain the battery - I can literally want the % decrease (it's gone from 34% to 30% in the time it has taken me to write this and I'm not even using it - I'm on my PC!!).
Any thoughts would be really welcome! Thanks :)
iPhone 13 Pro