INKZONE For iPhone 11 Pro Max E Ink Phone Case PC+TPU DIY Phone Cover 4-Color Display - Grey Enter the E-Ink Cover, a revolutionary accessory that redefines the norms of smartphone personalization. With its advanced e-ink screen technology, it offers a fresh avenue for making your iPhone distinctively yours, ensuring it stands out as a mirror of your unique identity. Showcase Your Style Leave bland cases behind The E-Ink Case lets your phone reflect your individuality. From celebrities to to-do lists, mottos, logos, or pet photos, personalize endlessly. Each design transforms your case into a unique talking point. NFC Technology The E Ink Case, an energy-saving and eco-friendly phone case, uses NFC to wirelessly transmit data for screen projection. No batteries or cables are needed, it enables a customizable dual-screen experience directly on your phone case. Durable and Sleek Design Hybrid Material: Crafted from premium PC and TPU, featuring a carbon fiber texture for an enhanced feel and anti-fingerprint properties. Ultra-Slim Profile: Maintains the phone's original aesthetics without adding bulk, providing a non-slippery and secure grip. 4-Color Ink Screen: The image will turn into four color ink screen after conversion Perfect Covered: All of your phones buttons, and switches made of textured metal features and functions work flawlessly, and convenient open access to ports and speakers. How to use: Step 1: Scan the QR code below to enter the official account, and download the APP according to the prompts. Step 2: When using, please turn on the mobile phone's Bluetooth first, then install the smartphone case on the mobile phone and plug in the interface. Step 3: Login and register for APP use. Step 4: Open the APP homepage, and click "My Device" to connect to the phone case. Find the serial number and add the corresponding mobile phone case, then the connection is successful. Step 5: Click "Start Your Creation" for DIY creation; start to create your own theme, and create your own theme by adding text, pictures, and background. Step 6: After creating the picture, click the " " button to upload it to the smartphone case synchronously. Specifications: Screen Size: 3.7 inches Screen Resolution: 240(H)*416(V)px Color System: 4 colors App: INKZONE (for Apple Store) Compatible with: iPhone 11 Pro Max Package included: 1 x Phone Case Other items not included