Sir 2 days back i have purchased iphone 15 pro and the battery is drain fast before i have used iphone 12 upgrade to 15 pro but battery drain fast
hi bro, do turn off “settings - general - background app refresh - off” then restart iPhone once. follow this charging practice and it will help to maintain over period of months usage.
No need to do any special steps to maintain battery bro. this is enough. As you are using the device for gaming, battery graph does looks good with high usage.
Just charge whenever it reaches 20% around. that is enough.
you will see improvement as you keep using the device. its a new iPhone so takes little time to optimise according to your usage too.