Arknights Wallpaper HD 4K is the best choice for you.
Compared to other Arknights wallpaper apps, this app gives you a huge collection (more than 1000 Arknights wallpapers)

This application is made for the lovers of the ANIME, for the lovers of Arknights. With a friendly user interface and easy to use.

HOW TO USE
1. Open Arknights Wallpaper HD 4K
2. Choose your favorite picture
3. Click "Set wallpaper" to set Home screen or Lock screen, or both.
4. Click "Fullscreen" if you want to view the photo in full-screen mode.
5. Click "Save" to download the photo to your phone.
6. Click "Share" if you want to share the photo on Facebook, Twitter, Message, Instagram, etc
7. Click "Favorite" if you want to save the photo to the favorites menu.

FEATURES
💛 High-quality photos (HD, Full HD, 2k, 4k)
💜 Lightweight & 100% Free
💓 Update notification
💗 Easy to use
💖 Autofit wallpaper to your device resolution
💜 Favorites menu.

DISCLAIMER
This application is made by Arknights fans, and it is unofficial. The content in this app is not affiliated with, endorsed, sponsored, or specifically approved by any company. This app is mainly for entertainment and for all fans to enjoy these Arknights wallpapers. All images are copyrighted by their respective owners. If we have infringed the copyright by using any images contained in this app, contact with us and we shall promptly remove them. Thank you!