How to change wallpaper on iPhone in an easy way?

[Jahanavi Verma]

Is there any easy way to change iPhone wallpaper?

 

[Lucifer]

Yes, super easy:
Go to Settings > Wallpaper > Add New Wallpaper, pick a photo or built-in option, then tap Set as Lock Screen / Home Screen / Both.
Or just long-press your Lock Screen, tap the + icon, and choose a new wallpaper.