1) Search for and download the App mentioned in the manual in the Apple store.
2) Simply fit the E-ink case on your mobile phone.
3) Open the APP and start creating your theme, add text and pictures, edit them freely.
4) Click the button in the button synchronize and upload to your E-ink case - DONE!
Absolutely not! It only requires a minimal amount of power from your phone when you're changing the image. Once the image is updated, the E-ink case's screen holds the pictures indefinitely without the need for a continuous power supply!