Can I replace my iPhone six screen from another iPhone 6?

My screen on my iPhone 6 broke I have another iPhone 6 but the battery doesn't stay charged for more than 20 minutes so my question is can I take the screen off of the iPhone that the screen works and replace my screen on the one that has broken screen? There both iPhone 6 not 6s so it's the same make and model.

If they're both the same model… Yes you can pull the one to replace the other.

However… It might be easier to replace the battery in the one that has the intact screen than it is to replace a cracked screen.

Yes you can, I've recycled screens from broken iPhones and put them on other ones. As long they're both the same model, you shouldn't have any problems doing so

Is it possible? Yes. Can you do it yourself? If you're asking this question then I doubt you can.