My iPhone 11 always needs charging

That’s getting pretty close to the 80% where the battery should be replaced.

But explain what “always needs charging” means. If you charge the phone overnight, every night, it should last to the end of the day when you charge it again, unless you are a very heavy gamer or spend hours on phone calls.

Go to Settings/General/Battery Health; read what it says under peak performance. If the battery should be replaced it will say so.

jfatzinger wrote:

How can I replace my iPhone battery and not my phone? Doesn’t make sense.

Apple will replace the battery in your phone in any Apple Store or authorized service shop. See iPhone Battery Repair & Replacement - Apple Support

By “more” do you mean that if you charge it overnight, every night, so it starts the day at 100%, you also have to charge it during the day?

How long does the battery last?

Wow.. is it less than 12 hrs or less than six hrs.

please check your display and brightness and see if your auto lock is set to never. if so change it.

The phone doesn’t need to be replaced, the battery may need to be soon.

You have to replace the battery. Do it from apple company itself