The smart ink screen phone case pairs with smartphones via NFC, enabling image change without internal power. The back features a four-color ink screen displaying patterns. Through APP, users can display personal content like photos, schedules, and payment codes. Made with liquid silicone, the frame offers a comfortable, safe, and resilient grip. The AG glass back panel with AF anti-fingerprint layer, ensures resistance to dirt and fingerprints. The inner side, crafted from synthetic microfiber, protects the phone's back, while the lens wrapping design enhances overall protection.